Question 1

A car increases its forward velocity uniformly from 40 m/s to 80 m/s while traveling a distance of 200 m.What is its acceleration during this time?

Accepted Answer

A) 8.0 m/s2 
B) 9.6 m/s2 
C) 12 m/s2 
D) 24 m/s2 
A) 8.0 m/s2 
B) 9.6 m/s2 
C) 12 m/s2 
D) 24 m/s2 C

Question 2

The slope of a velocity versus time graph gives

Accepted Answer

A) the distance traveled. 
B) velocity. 
C) acceleration. 
D) displacement. 
A) the distance traveled. 
B) velocity. 
C) acceleration. 
D) displacement. C

Question 3

A rock is projected upward from the surface of the Moon,at time t = 0 s,with an upward velocity of 30.0 m/s.The acceleration due to gravity at the surface of the Moon is 1.62 m/s2,and the Moon has no atmosphere.The height of the rock when it is descending with a speed of 20.0 m/s is closest to

Accepted Answer

A) 115 m. 
B) 125 m. 
C) 135 m. 
D) 145 m. 
E) 154 m. 
A) 115 m. 
B) 125 m. 
C) 135 m. 
D) 145 m. 
E) 154 m. E

Question 4

The graph in the figure shows the position of a particle as it travels along the x-axis.What is the magnitude of the average velocity of the particle between t = 1.0 s and t = 4.0 s?

Accepted Answer

A) 0.25 m/s 
B) 0.50 m/s 
C) 0.67 m/s 
D) 1.0 m/s 
E) 1.3 m/s 
A) 0.25 m/s 
B) 0.50 m/s 
C) 0.67 m/s 
D) 1.0 m/s 
E) 1.3 m/s

Question 5

The graph in the figure shows the position of a particle as it travels along the x-axis.What is the magnitude of the average speed of the particle between t = 1.0 s and t = 4.0 s?

Accepted Answer

A) 1.0 m/s 
B) 1.3 m/s 
C) 0.67 m/s 
D) 0.50 m/s 
E) 0.25 m/s 
A) 1.0 m/s 
B) 1.3 m/s 
C) 0.67 m/s 
D) 0.50 m/s 
E) 0.25 m/s

Question 6

A polar bear starts at the North Pole.It travels 1.0 km south,then 1.0 km east,and then 1.0 km north to return to its starting point.This trip takes 45 min.What was the bear's average speed?

Accepted Answer

A) 0.00 km/h 
B) 0.067 km/h 
C) 4.0 km/h 
D) 5.3 km/h 
A) 0.00 km/h 
B) 0.067 km/h 
C) 4.0 km/h 
D) 5.3 km/h

Question 7

A car is traveling north at 17.7m/s.  After 12 s its velocity is 14.1 m/s.  In the same direction.Find the magnitude and direction of the car's average acceleration.

Accepted Answer

A) 0.30 m/s2,south 
B) 2.7 m/s2,south 
C) 0.30 m/s2,north 
D) 2.7 m/s2,north 
A) 0.30 m/s2,south 
B) 2.7 m/s2,south 
C) 0.30 m/s2,north 
D) 2.7 m/s2,north

Question 8

A test rocket at ground level is fired straight up from rest with a net upward acceleration of 20 m/s2.After 4.0 s,the motor turns off but the rocket continues to coast upward with insignificant air resistance.What maximum elevation does the rocket reach?

Accepted Answer

A) 160 m 
B) 330 m 
C) 320 m 
D) 410 m 
E) 490 m 
A) 160 m 
B) 330 m 
C) 320 m 
D) 410 m 
E) 490 m

Question 9

Human reaction time is usually greater than 0.10 s.If your friend holds a ruler between your fingers and releases it without warning,how far can you expect the ruler to fall before you catch it,assuming negligible air resistance?

Accepted Answer

A) at least 3.0 cm 
B) at least 4.9 cm 
C) at least 6.8 cm 
D) at least 9.8 cm 
A) at least 3.0 cm 
B) at least 4.9 cm 
C) at least 6.8 cm 
D) at least 9.8 cm

Question 10

Which of the following graphs represent an object having zero acceleration?

Accepted Answer

A) only graph a 
B) only graph b 
C) graphs a and b 
D) graphs b and c 
E) graphs c and d 
A) only graph a 
B) only graph b 
C) graphs a and b 
D) graphs b and c 
E) graphs c and d

Question 11

A light-year is the distance that light travels in one year.The speed of light is 3.00 × 108 m/s.How many miles are there in one light-year? (1 mi = 1609 m,1 y = 365 d)

Accepted Answer

A) 9.46 × 1012 mi 
B) 9.46 × 1015 mi 
C) 5.88 × 1012 mi 
D) 5.88 × 1015 mi 
A) 9.46 × 1012 mi 
B) 9.46 × 1015 mi 
C) 5.88 × 1012 mi 
D) 5.88 × 1015 mi

Question 12

Assuming equal rates of uniform acceleration in both cases,how much further would you travel if braking from 56 mi/h. 
To rest than from 28 mi/h?

Accepted Answer

A) 4 times farther 
B) 3.2 times farther 
C) 4.8 times farther 
D) 5.2 times farther 
A) 4 times farther 
B) 3.2 times farther 
C) 4.8 times farther 
D) 5.2 times farther

Question 13

Two objects are thrown from the top of a tall building.One is thrown up,and the other is thrown down,both with the same initial speed.What are their speeds when they hit the street? Neglect air resistance.

Accepted Answer

A) The one thrown up is traveling faster. 
B) The one thrown down is traveling faster. 
C) They are traveling at the same speed. 
D) It is impossible to tell because the height of the building is not given. 
A) The one thrown up is traveling faster. 
B) The one thrown down is traveling faster. 
C) They are traveling at the same speed. 
D) It is impossible to tell because the height of the building is not given.

Question 14

A racquetball strikes a wall with a speed of 30 m/s and rebounds in the opposite direction with a speed of 26 m/s.The collision takes 20 ms.What is the average acceleration of the ball during the collision with the wall?

Accepted Answer

A) 0 m/s2 
B) 200 m/s2 
C) 2800 m/s2 
D) 1500 m/s2 
E) 1300 m/s2 
A) 0 m/s2 
B) 200 m/s2 
C) 2800 m/s2 
D) 1500 m/s2 
E) 1300 m/s2

Question 15

A bicyclist starts a timed race at 6.0 mi/h.  In order to win,he must average 21 mi/h.  Assuming constant acceleration from the start,how fast must he be traveling at the end of the race?

Accepted Answer

A) 36 mi/h 
B) 30 mi/h 
C) 24 mi/h 
D) 42 mi/h 
A) 36 mi/h 
B) 30 mi/h 
C) 24 mi/h 
D) 42 mi/h

Question 16

A ball is thrown downward from the top of a building with an initial speed of 25 m/s.It strikes the ground after 2.0 s.How high is the building,assuming negligible air resistance?

Accepted Answer

A) 20 m 
B) 30 m 
C) 50 m 
D) 70 m 
A) 20 m 
B) 30 m 
C) 50 m 
D) 70 m

Question 17

Assuming equal rates of acceleration in both cases,how much longer would it take a car to stop if braking from 56 mi/h than from 28 mi/h?

Accepted Answer

A) 8 times as long 
B) 4 times as long 
C) 2 times as long 
D) 1.4 times as long 
E) the same in both cases 
A) 8 times as long 
B) 4 times as long 
C) 2 times as long 
D) 1.4 times as long 
E) the same in both cases

Question 18

The motions of a car and a truck along a straight road are represented by the velocity-time graphs in the figure.The two vehicles are initially alongside each other at time t = 0.  
At time T,what is true of the distances traveled by the vehicles since time t = 0?

Accepted Answer

A) They will have traveled the same distance. 
B) The truck will not have moved. 
C) The car will have travelled further than the truck. 
D) The truck will have travelled further than the car. 
A) They will have traveled the same distance. 
B) The truck will not have moved. 
C) The car will have travelled further than the truck. 
D) The truck will have travelled further than the car.

Question 19

An object is moving with constant non-zero velocity in the +x direction.The velocity versus time graph of this object is

Accepted Answer

A) a horizontal straight line. 
B) a vertical straight line. 
C) a straight line making an angle with the time axis. 
D) a parabolic curve. 
A) a horizontal straight line. 
B) a vertical straight line. 
C) a straight line making an angle with the time axis. 
D) a parabolic curve.

Question 20

A ball is thrown straight up with a speed of 36 m/s.How long does it take to return to its starting point,assuming negligible air resistance?

Accepted Answer

A) 3.7 s 
B) 7.3 s 
C) 11 s 
D) 15 s 
A) 3.7 s 
B) 7.3 s 
C) 11 s 
D) 15 s

Exam 2: One-Dimensional Kinematics

A car increases its forward velocity uniformly from 40 m/s to 80 m/s while traveling a distance of 200 m.What is its acceleration during this time?

The slope of a velocity versus time graph gives

A rock is projected upward from the surface of the Moon,at time t = 0 s,with an upward velocity of 30.0 m/s.The acceleration due to gravity at the surface of the Moon is 1.62 m/s2,and the Moon has no atmosphere.The height of the rock when it is descending with a speed of 20.0 m/s is closest to

The graph in the figure shows the position of a particle as it travels along the x-axis.What is the magnitude of the average velocity of the particle between t = 1.0 s and t = 4.0 s?

The graph in the figure shows the position of a particle as it travels along the x-axis.What is the magnitude of the average speed of the particle between t = 1.0 s and t = 4.0 s?

A polar bear starts at the North Pole.It travels 1.0 km south,then 1.0 km east,and then 1.0 km north to return to its starting point.This trip takes 45 min.What was the bear's average speed?

A car is traveling north at 17.7m/s. After 12 s its velocity is 14.1 m/s. In the same direction.Find the magnitude and direction of the car's average acceleration.

A test rocket at ground level is fired straight up from rest with a net upward acceleration of 20 m/s2.After 4.0 s,the motor turns off but the rocket continues to coast upward with insignificant air resistance.What maximum elevation does the rocket reach?

Human reaction time is usually greater than 0.10 s.If your friend holds a ruler between your fingers and releases it without warning,how far can you expect the ruler to fall before you catch it,assuming negligible air resistance?

Which of the following graphs represent an object having zero acceleration?

A light-year is the distance that light travels in one year.The speed of light is 3.00 × 108 m/s.How many miles are there in one light-year? (1 mi = 1609 m,1 y = 365 d)

Assuming equal rates of uniform acceleration in both cases,how much further would you travel if braking from 56 mi/h. To rest than from 28 mi/h?

Two objects are thrown from the top of a tall building.One is thrown up,and the other is thrown down,both with the same initial speed.What are their speeds when they hit the street? Neglect air resistance.

A racquetball strikes a wall with a speed of 30 m/s and rebounds in the opposite direction with a speed of 26 m/s.The collision takes 20 ms.What is the average acceleration of the ball during the collision with the wall?

A bicyclist starts a timed race at 6.0 mi/h. In order to win,he must average 21 mi/h. Assuming constant acceleration from the start,how fast must he be traveling at the end of the race?

A ball is thrown downward from the top of a building with an initial speed of 25 m/s.It strikes the ground after 2.0 s.How high is the building,assuming negligible air resistance?

Assuming equal rates of acceleration in both cases,how much longer would it take a car to stop if braking from 56 mi/h than from 28 mi/h?

The motions of a car and a truck along a straight road are represented by the velocity-time graphs in the figure.The two vehicles are initially alongside each other at time t = 0. At time T,what is true of the distances traveled by the vehicles since time t = 0?

An object is moving with constant non-zero velocity in the +x direction.The velocity versus time graph of this object is

A ball is thrown straight up with a speed of 36 m/s.How long does it take to return to its starting point,assuming negligible air resistance?

Introduction to Physics

Vectors in Physics

Two-Dimensional Kinematics

Newtons Laws of Motion

Applications of Newtons Laws

Work and Kinetic Energy

Potential Energy and Conservation of Energy

Linear Momentum and Collisions

Rotational Kinematics and Energy

Rotational Dynamics and Static Equilibrium

Gravity

Oscillations About Equilibrium

Waves and Sound

Fluids

Temperature and Heat

Phases and Phase Changes

The Laws of Thermodynamics

Electric Charges, Forces, and Fields

Electric Potential and Electric

Electric Current and Direct-Current Circuits

Magnetism

Magnetic Flux and Faradays Law of Induction

Alternating-Current Circuits

Electromagnetic Waves

Geometrical Optics

Optical Instruments

Physical Optics: Interference and Diffraction

Relativity

Quantum Physics

Atomic Physics

Nuclear Physics and Nuclear Radiation

Filters

A rock is projected upward from the surface of the Moon,at time t = 0 s,with an upward velocity of 30.0 m/s.The acceleration due to gravity at the surface of the Moon is 1.62 m/s²,and the Moon has no atmosphere.The height of the rock when it is descending with a speed of 20.0 m/s is closest to

A test rocket at ground level is fired straight up from rest with a net upward acceleration of 20 m/s².After 4.0 s,the motor turns off but the rocket continues to coast upward with insignificant air resistance.What maximum elevation does the rocket reach?

A light-year is the distance that light travels in one year.The speed of light is 3.00 × 10⁸ m/s.How many miles are there in one light-year? (1 mi = 1609 m,1 y = 365 d)