Question 1

A car travels around an oval racetrack at constant speed. The car is accelerating

Accepted Answer

A) at all points except B and D. 
B) at all points except A and C. 
C) at all points except A, B, C, and D. 
D) everywhere, including points A, B, C, and D. 
E) nowhere, because it is travelling at constant speed. 
A) at all points except B and D. 
B) at all points except A and C. 
C) at all points except A, B, C, and D. 
D) everywhere, including points A, B, C, and D. 
E) nowhere, because it is travelling at constant speed.

Question 2

A satellite is in a circular orbit 600 km above the Earth's surface. The acceleration of gravity is 8.21 m/s2 at this altitude. The radius of the Earth is 6400 km. Determine the speed of the satellite, and the time to complete one orbit around the Earth.

Accepted Answer

The answer of A satellite is in a circular orbit...

Question 3

Two balls, projected at different times so they don't collide, have trajectories A and B, as shown below.   Which statement is correct?

Accepted Answer

A) v0B must be greater than v0A. 
B) Ball A is in the air for a longer time than ball B. 
C) Ball B is in the air for a longer time than ball A. 
D) Ball B has a greater acceleration than ball A. 
E) Ball A has a greater acceleration than ball B. 
A) v0B must be greater than v0A. 
B) Ball A is in the air for a longer time than ball B. 
C) Ball B is in the air for a longer time than ball A. 
D) Ball B has a greater acceleration than ball A. 
E) Ball A has a greater acceleration than ball B.

Question 4

The position of an object is given by $\overrightarrow{\mathbf{r}}=\left(-4.00 t \hat{\mathbf{i}}+6.00 t^{3} \hat{\mathbf{j}}\right) \mathrm{m}$ where t is in seconds. At t = 2.0 s, what is the magnitude of the particle's acceleration?

Accepted Answer

A) 0 m/s2 
B) 2.0 m/s2 
C) 17 m/s2 
D) 36 m/s2 
E) 72 m/s2 
A) 0 m/s2 
B) 2.0 m/s2 
C) 17 m/s2 
D) 36 m/s2 
E) 72 m/s2

Question 5

A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 20 m/s north, and the total acceleration of the car is 2.5 m/s2 37$\degree$ south of west. Which of the following is correct?

Accepted Answer

A) R = 0.40 km, and the car's speed is decreasing. 
B) R = 0.20 km, and the car's speed is decreasing. 
C) R = 0.20 km, and the car's speed is increasing. 
D) R = 0.16 km, and the car's speed is increasing. 
E) R = 0.16 km, and the car's speed is decreasing. 
A) R = 0.40 km, and the car's speed is decreasing. 
B) R = 0.20 km, and the car's speed is decreasing. 
C) R = 0.20 km, and the car's speed is increasing. 
D) R = 0.16 km, and the car's speed is increasing. 
E) R = 0.16 km, and the car's speed is decreasing.

Question 6

Starting from one oasis, a camel walks 25 km in a direction 30$\degree$ south of west and then walks 30 km toward the north to a second oasis. What distance separates the two oases?

Accepted Answer

A) 15 km 
B) 48 km 
C) 28 km 
D) 53 km 
E) 55 km 
A) 15 km 
B) 48 km 
C) 28 km 
D) 53 km 
E) 55 km

Question 7

A football is kicked upward at a 30.0$\degree$ angle to the horizontal. To kick a 40.0-metre pass, what must be the initial speed of the ball?

Accepted Answer

The answer of A football is kicked upward at a...

Question 8

There are floods in outback Queensland and you are on a mission to deliver supplies to stranded households. You plan to drop them from an aircraft which will be flying horizontally with a speed of 300 m/s at an altitude of 400 m. Assume that the ground is level. At what horizontal distance from a household must the pilot drop the supplies so that they reach the household?

Accepted Answer

A) 3.0 km 
B) 2.4 km 
C) 3.3 km 
D) 2.7 km 
E) 1.7 km 
A) 3.0 km 
B) 2.4 km 
C) 3.3 km 
D) 2.7 km 
E) 1.7 km

Question 9

A rock is projected from the edge of the top of a building with an initial velocity of 12.2 m/s at an angle of 53$\degree$ above the horizontal. The rock strikes the ground a horizontal distance of 25 m from the base of the building. Assume that the ground is level and that the side of the building is vertical. How tall is the building?

Accepted Answer

A) 25.3 m 
B) 29.6 m 
C) 27.4 m 
D) 23.6 m 
E) 18.9 m 
A) 25.3 m 
B) 29.6 m 
C) 27.4 m 
D) 23.6 m 
E) 18.9 m

Question 10

A car travels counterclockwise around a flat circle of radius 0.25 km at a constant speed of 20 m/s. When the car is at point A as shown in the figure, what is the car's acceleration?

Accepted Answer

A) 1.6 m/s2, south 
B) zero 
C) 1.6 m/s2, east 
D) 1.6 m/s2, north 
E) 1.6 m/s2, west 
A) 1.6 m/s2, south 
B) zero 
C) 1.6 m/s2, east 
D) 1.6 m/s2, north 
E) 1.6 m/s2, west

Question 11

The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball?

Accepted Answer

A) 16 s 
B) 21 s 
C) 24 s 
D) 14 s 
E) 19 s 
A) 16 s 
B) 21 s 
C) 24 s 
D) 14 s 
E) 19 s

Question 12

A tennis player standing 12.6 m from the net hits the ball at 3.00$\degree$ above the horizontal. To clear the net, the ball must rise at least 0.330 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving when it left the racket?

Accepted Answer

The answer of A tennis player standing 12.6 m from...

Question 13

A rock is thrown from the edge of the top of a 100-ft tall building at some unknown angle above the horizontal. The rock strikes the ground a horizontal distance of 160 ft from the base of the building 5.0 s after being thrown. Assume that the ground is level and that the side of the building is vertical. Determine the speed with which the rock was thrown.

Accepted Answer

A) 72 ft/s 
B) 77 ft/s 
C) 68 ft/s 
D) 82 ft/s 
E) 87 ft/s 
A) 72 ft/s 
B) 77 ft/s 
C) 68 ft/s 
D) 82 ft/s 
E) 87 ft/s

Question 14

Two cars are travelling around identical circular racetracks. Car A travels at a constant speed of 20 m/s. Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s. When car B has the same (tangential) velocity as car A, it is always true that:

Accepted Answer

A) it is passing car A. 
B) it has the same linear (tangential) acceleration as car A. 
C) it has the same centripetal acceleration as car A. 
D) it has the same total acceleration as car A. 
E) it has travelled farther than car A since starting. 
A) it is passing car A. 
B) it has the same linear (tangential) acceleration as car A. 
C) it has the same centripetal acceleration as car A. 
D) it has the same total acceleration as car A. 
E) it has travelled farther than car A since starting.

Question 15

A student in the front of a school bus tosses a ball to another student in the back of the bus while the bus is moving forward at constant velocity. The speed of the ball as seen by a stationary observer in the street:

Accepted Answer

A) is less than that observed inside the bus. 
B) is the same as that observed inside the bus. 
C) is greater than that observed inside the bus. 
D) may be either greater or smaller than that observed inside the bus. 
E) may be either greater, smaller, or equal to that observed inside the bus. 
A) is less than that observed inside the bus. 
B) is the same as that observed inside the bus. 
C) is greater than that observed inside the bus. 
D) may be either greater or smaller than that observed inside the bus. 
E) may be either greater, smaller, or equal to that observed inside the bus.

Question 16

In a location where the train tracks run parallel to a road, a sports car travelling at 60 m/s passes a freight train travelling at 30 m/s. How long does it take for the car to be 180 m ahead of the train?

Accepted Answer

A) 2.0 s 
B) 3.0 s 
C) 6.0 s 
D) 9.0 s 
E) 18.0 s 
A) 2.0 s 
B) 3.0 s 
C) 6.0 s 
D) 9.0 s 
E) 18.0 s

Question 17

Jane plans to fly from Canberra to Adelaide, about 1000 km due west of Canberra. She heads due west at 100 km/h for 10 hours but finds herself at Broken Hill, which is 370 km from Adelaide in a direction 45 degrees north of due east. What was the wind velocity?

Accepted Answer

A) 37 km/h, E 
B) 37 km/h, N 
C) 37 km/h, NE 
D) 74 km/h, N 
E) 74 km/h, NE 
A) 37 km/h, E 
B) 37 km/h, N 
C) 37 km/h, NE 
D) 74 km/h, N 
E) 74 km/h, NE

Question 18

An object moving at a constant speed requires 6.0 s to go once around a circle with a diameter of 4.0 m. What is the magnitude of the instantaneous acceleration of the particle during this time?

Accepted Answer

A) 2.2 m/s2 
B) 2.7 m/s2 
C) 3.3 m/s2 
D) 3.8 m/s2 
E) 4.4 m/s2 
A) 2.2 m/s2 
B) 2.7 m/s2 
C) 3.3 m/s2 
D) 3.8 m/s2 
E) 4.4 m/s2

Question 19

A vector starts at coordinate (3.0, 4.0) and ends at coordinate (-2.0, 16.0). What are the magnitude and direction of this vector?

Accepted Answer

The answer of A vector starts at coordinate (3.0, 4.0)...

Question 20

A motorcycle daredevil wants to ride up a 50.0 m ramp set at a 30.0$\degree$incline to the ground. It will launch him in the air and he wants to come down so he just misses the last of a number of 1.00 m diameter barrels. If the speed at the instant when he leaves the ramp is 60.0 m/s, how many barrels can be used?

Accepted Answer

A) 79 
B) 318 
C) 332 
D) 355 
E) 402 
A) 79 
B) 318 
C) 332 
D) 355 
E) 402

A car travels around an oval racetrack at constant speed. The car is accelerating

A satellite is in a circular orbit 600 km above the Earth's surface. The acceleration of gravity is 8.21 m/s2 at this altitude. The radius of the Earth is 6400 km. Determine the speed of the satellite, and the time to complete one orbit around the Earth.

Two balls, projected at different times so they don't collide, have trajectories A and B, as shown below. Which statement is correct?

The position of an object is given by $\overrightarrow{\mathbf{r}}=\left(-4.00 t \hat{\mathbf{i}}+6.00 t^{3} \hat{\mathbf{j}}\right) \mathrm{m}$ where t is in seconds. At t = 2.0 s, what is the magnitude of the particle's acceleration?

A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 20 m/s north, and the total acceleration of the car is 2.5 m/s2 37 $\degree$ south of west. Which of the following is correct?

Starting from one oasis, a camel walks 25 km in a direction 30 $\degree$ south of west and then walks 30 km toward the north to a second oasis. What distance separates the two oases?

A football is kicked upward at a 30.0 $\degree$ angle to the horizontal. To kick a 40.0-metre pass, what must be the initial speed of the ball?

A car travels counterclockwise around a flat circle of radius 0.25 km at a constant speed of 20 m/s. When the car is at point A as shown in the figure, what is the car's acceleration?

The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball?

A tennis player standing 12.6 m from the net hits the ball at 3.00 $\degree$ above the horizontal. To clear the net, the ball must rise at least 0.330 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving when it left the racket?

Two cars are travelling around identical circular racetracks. Car A travels at a constant speed of 20 m/s. Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s. When car B has the same (tangential) velocity as car A, it is always true that:

A student in the front of a school bus tosses a ball to another student in the back of the bus while the bus is moving forward at constant velocity. The speed of the ball as seen by a stationary observer in the street:

In a location where the train tracks run parallel to a road, a sports car travelling at 60 m/s passes a freight train travelling at 30 m/s. How long does it take for the car to be 180 m ahead of the train?

Jane plans to fly from Canberra to Adelaide, about 1000 km due west of Canberra. She heads due west at 100 km/h for 10 hours but finds herself at Broken Hill, which is 370 km from Adelaide in a direction 45 degrees north of due east. What was the wind velocity?

An object moving at a constant speed requires 6.0 s to go once around a circle with a diameter of 4.0 m. What is the magnitude of the instantaneous acceleration of the particle during this time?

A vector starts at coordinate (3.0, 4.0) and ends at coordinate (-2.0, 16.0). What are the magnitude and direction of this vector?

Physics and Measurement

Motion in One Dimension

Forces and Newtons Laws

Further Applications of Newtons Laws

Work, Force and Energy

Conservation of Energy

Linear Momentum and Collisions

Rotational Motion

Energy and Momentum in Rotating Systems

Gravity

Special Relativity

Fluid Statics

Fluid Dynamics

Solids

Oscillatory Motion

Wave Motion

Superposition and Interference

Heat and Temperature

Energy Transfer Processes and Thermodynamics

The Kinetic Theory of Gases

The Second Law of Thermodynamics, Heat Engines and Entropy

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Exam 3: Motion in Two Dimensions

A car travels around an oval racetrack at constant speed. The car is accelerating

A satellite is in a circular orbit 600 km above the Earth's surface. The acceleration of gravity is 8.21 m/s2 at this altitude. The radius of the Earth is 6400 km. Determine the speed of the satellite, and the time to complete one orbit around the Earth.

Two balls, projected at different times so they don't collide, have trajectories A and B, as shown below. Which statement is correct?

The position of an object is given by r→=(−4.00ti^+6.00t3j^)m\overrightarrow{\mathbf{r}}=\left(-4.00 t \hat{\mathbf{i}}+6.00 t^{3} \hat{\mathbf{j}}\right) \mathrm{m}r=(−4.00ti^+6.00t3j^​)m where t is in seconds. At t = 2.0 s, what is the magnitude of the particle's acceleration?

A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 20 m/s north, and the total acceleration of the car is 2.5 m/s2 37 °\degree° south of west. Which of the following is correct?

Starting from one oasis, a camel walks 25 km in a direction 30 °\degree° south of west and then walks 30 km toward the north to a second oasis. What distance separates the two oases?

A football is kicked upward at a 30.0 °\degree° angle to the horizontal. To kick a 40.0-metre pass, what must be the initial speed of the ball?

A car travels counterclockwise around a flat circle of radius 0.25 km at a constant speed of 20 m/s. When the car is at point A as shown in the figure, what is the car's acceleration?

The initial speed of a cannon ball is 0.20 km/s. If the ball is to strike a target that is at a horizontal distance of 3.0 km from the cannon, what is the minimum time of flight for the ball?

A tennis player standing 12.6 m from the net hits the ball at 3.00 °\degree° above the horizontal. To clear the net, the ball must rise at least 0.330 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving when it left the racket?

Two cars are travelling around identical circular racetracks. Car A travels at a constant speed of 20 m/s. Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s. When car B has the same (tangential) velocity as car A, it is always true that:

A student in the front of a school bus tosses a ball to another student in the back of the bus while the bus is moving forward at constant velocity. The speed of the ball as seen by a stationary observer in the street:

In a location where the train tracks run parallel to a road, a sports car travelling at 60 m/s passes a freight train travelling at 30 m/s. How long does it take for the car to be 180 m ahead of the train?

Jane plans to fly from Canberra to Adelaide, about 1000 km due west of Canberra. She heads due west at 100 km/h for 10 hours but finds herself at Broken Hill, which is 370 km from Adelaide in a direction 45 degrees north of due east. What was the wind velocity?

An object moving at a constant speed requires 6.0 s to go once around a circle with a diameter of 4.0 m. What is the magnitude of the instantaneous acceleration of the particle during this time?

A vector starts at coordinate (3.0, 4.0) and ends at coordinate (-2.0, 16.0). What are the magnitude and direction of this vector?

Physics and Measurement

Motion in One Dimension

Forces and Newtons Laws

Further Applications of Newtons Laws

Work, Force and Energy

Conservation of Energy

Linear Momentum and Collisions

Rotational Motion

Energy and Momentum in Rotating Systems

Gravity

Special Relativity

Fluid Statics

Fluid Dynamics

Solids

Oscillatory Motion

Wave Motion

Superposition and Interference

Heat and Temperature

Energy Transfer Processes and Thermodynamics

The Kinetic Theory of Gases

The Second Law of Thermodynamics, Heat Engines and Entropy

Filters

The position of an object is given by $\overrightarrow{\mathbf{r}}=\left(-4.00 t \hat{\mathbf{i}}+6.00 t^{3} \hat{\mathbf{j}}\right) \mathrm{m}$ where t is in seconds. At t = 2.0 s, what is the magnitude of the particle's acceleration?

A car travels in a flat circle of radius R. At a certain instant the velocity of the car is 20 m/s north, and the total acceleration of the car is 2.5 m/s2 37 $\degree$ south of west. Which of the following is correct?

Starting from one oasis, a camel walks 25 km in a direction 30 $\degree$ south of west and then walks 30 km toward the north to a second oasis. What distance separates the two oases?

A football is kicked upward at a 30.0 $\degree$ angle to the horizontal. To kick a 40.0-metre pass, what must be the initial speed of the ball?

A tennis player standing 12.6 m from the net hits the ball at 3.00 $\degree$ above the horizontal. To clear the net, the ball must rise at least 0.330 m. If the ball just clears the net at the apex of its trajectory, how fast was the ball moving when it left the racket?