Question 1

How much time elapses between the throwing of the ball and its return to the original launch point?

Accepted Answer

A) 4.00 s 
B) 2.00 s 
C) 12.0 s 
D) 8.00 s 
E) 16.0 s 
A) 4.00 s 
B) 2.00 s 
C) 12.0 s 
D) 8.00 s 
E) 16.0 s

Question 2

A pitcher delivers a fast ball with a velocity of 43 m/s to the south.The batter hits the ball and gives it a velocity of 51 m/s to the north.What was the average acceleration of the ball during the 1.0 ms when it was in contact with the bat?

Accepted Answer

A) 4.3 × 104 m/s2, south 
B) 5.1 × 104 m/s2, north 
C) 9.4 × 104 m/s2, north 
D) 2.2 × 103 m/s2, south 
E) 7.0 × 103 m/s2, north 
A) 4.3 × 104 m/s2, south 
B) 5.1 × 104 m/s2, north 
C) 9.4 × 104 m/s2, north 
D) 2.2 × 103 m/s2, south 
E) 7.0 × 103 m/s2, north

Question 3

A turtle takes 3.5 minutes to walk 18 m toward the south along a deserted highway.A truck driver stops and picks up the turtle.The driver takes the turtle to a town 1.1 km to the north with an average speed of 12 m/s.What is the magnitude of the average velocity of the turtle for its entire journey?

Accepted Answer

A) 3.6 m/s 
B) 9.8 m/s 
C) 6.0 m/s 
D) 2.6 m/s 
E) 11 m/s 
A) 3.6 m/s 
B) 9.8 m/s 
C) 6.0 m/s 
D) 2.6 m/s 
E) 11 m/s

Question 4

Approximately how long does it take the tennis ball to reach its maximum height?

Accepted Answer

A) 0.50 s 
B) 2.04 s 
C) 4.08 s 
D) 6.08 s 
E) 9.80 s 
A) 0.50 s 
B) 2.04 s 
C) 4.08 s 
D) 6.08 s 
E) 9.80 s

Question 5

A car is initially traveling at 50.0 km/h.The brakes are applied and the car stops over a distance of 35 m.What was magnitude of the car's acceleration while it was braking?

Accepted Answer

A) 2.8 m/s2 
B) 5.4 m/s2 
C) 36 m/s2 
D) 71 m/s2 
E) 9.8 m/s2 
A) 2.8 m/s2 
B) 5.4 m/s2 
C) 36 m/s2 
D) 71 m/s2 
E) 9.8 m/s2

Question 6

For which one of the following situations will the path length equal the magnitude of the displacement?

Accepted Answer

A) A toy train is traveling around a circular track. 
B) A ball is rolling down an inclined plane. 
C) A train travels 5 miles east before it stops.It then travels 2 miles west. 
D) A ball rises and falls after being thrown straight up from the earth's surface. 
E) A ball on the end of a string is moving in a vertical circle. 
A) A toy train is traveling around a circular track. 
B) A ball is rolling down an inclined plane. 
C) A train travels 5 miles east before it stops.It then travels 2 miles west. 
D) A ball rises and falls after being thrown straight up from the earth's surface. 
E) A ball on the end of a string is moving in a vertical circle.

Question 7

Which one of the following situations is not possible?

Accepted Answer

A) A body has zero velocity and non-zero acceleration. 
B) A body travels with a northward velocity and a northward acceleration. 
C) A body travels with a northward velocity and a southward acceleration. 
D) A body travels with a constant velocity and a time-varying acceleration. 
E) A body travels with a constant acceleration and a time-varying velocity. 
A) A body has zero velocity and non-zero acceleration. 
B) A body travels with a northward velocity and a northward acceleration. 
C) A body travels with a northward velocity and a southward acceleration. 
D) A body travels with a constant velocity and a time-varying acceleration. 
E) A body travels with a constant acceleration and a time-varying velocity.

Question 8

2-14
A small object is released from rest and falls 1.00 × 10S1U1P12S1S1P0 feet near the surface of the earth.Neglect air resistance.
-How long will it take to fall through the 1.00 × 102 feet mentioned?

Accepted Answer

A) 2.49 s 
B) 3.12 s 
C) 4.50 s 
D) 6.25 s 
E) 10.0 s 
A) 2.49 s 
B) 3.12 s 
C) 4.50 s 
D) 6.25 s 
E) 10.0 s

Question 9

A ball is thrown vertically upward from the surface of the earth.Consider the following quantities: (1) the speed of the ball; (2) the velocity of the ball; (3) the acceleration of the ball.
Which of these is (are) zero when the ball has reached the maximum height?

Accepted Answer

A) 1 and 2 only 
B) 1 and 3 only 
C) 1 only 
D) 2 only 
E) 1, 2, and 3 
A) 1 and 2 only 
B) 1 and 3 only 
C) 1 only 
D) 2 only 
E) 1, 2, and 3

Question 10

2-14
A small object is released from rest and falls 1.00 × 10S1U1P12S1S1P0 feet near the surface of the earth.Neglect air resistance.
-Approximately how fast will the object be moving after falling through the 1.00 × 102 feet mentioned?

Accepted Answer

A) 9.8 ft/s 
B) 40 ft/s 
C) 80 ft/s 
D) 160 ft/s 
E) 320 ft/s 
A) 9.8 ft/s 
B) 40 ft/s 
C) 80 ft/s 
D) 160 ft/s 
E) 320 ft/s

Question 11

2-15
The figure shows the speed as a function of time for an object in free fall near the surface of the earth.   The object was dropped from rest in a long evacuated cylinder.
-What is the numerical value of the slope of the line?

Accepted Answer

A) 1.0 m/s2 
B) 2.0 m/s2 
C) 7.7 m/s2 
D) 9.8 m/s2 
E) This cannot be determined from the information given since the speed and time values are unknown. 
A) 1.0 m/s2 
B) 2.0 m/s2 
C) 7.7 m/s2 
D) 9.8 m/s2 
E) This cannot be determined from the information given since the speed and time values are unknown.

Question 12

2-7
An object is moving along a straight line.The graph shows the object's position from the starting point as a function of time.  
-What was the instantaneous velocity of the object at t = 4 s?

Accepted Answer

A) +6 m/s 
B) +8 m/s 
C) +10 m/s 
D) +20 m/s 
E) +40 m/s 
A) +6 m/s 
B) +8 m/s 
C) +10 m/s 
D) +20 m/s 
E) +40 m/s

Question 13

At time t = 0 s, an object is observed at x = 0 m; and its position along the x axis follows this expression: x = -4t + t2, where the units for distance and time are meters and seconds, respectively.What is the object's displacemen$\Delta$x between t = 1.0 s and t = 3.0 s?

Accepted Answer

A) +16 m 
B) -21 m 
C) +10 m 
D) +2 m 
E) -5 m 
A) +16 m 
B) -21 m 
C) +10 m 
D) +2 m 
E) -5 m

Question 14

2-15
The figure shows the speed as a function of time for an object in free fall near the surface of the earth.   The object was dropped from rest in a long evacuated cylinder.
-What is the speed of the object 3.0 seconds after it is dropped?

Accepted Answer

A) 3.0 m/s 
B) 7.7 m/s 
C) 9.8 m/s 
D) 29 m/s 
E) This cannot be determined since there is no specified value of height. 
A) 3.0 m/s 
B) 7.7 m/s 
C) 9.8 m/s 
D) 29 m/s 
E) This cannot be determined since there is no specified value of height.

Question 15

2-3
An object starts from rest and accelerates uniformly in a straight line in the positive x direction.
After 11 seconds, its speed is 70.0 m/s.
-Determine the acceleration of the object.

Accepted Answer

A) +3.5 m/s2 
B) +6.4 m/s2 
C) -3.5 m/s2 
D) -6.4 m/s2 
E) +7.7 m/s2 
A) +3.5 m/s2 
B) +6.4 m/s2 
C) -3.5 m/s2 
D) -6.4 m/s2 
E) +7.7 m/s2

Question 16

A train with a constant velocity of +28.6 m/s approaches a small town .The operator applies the brake, reducing the train's velocity to +11.4 m/s.If the average acceleration of the train during braking is -1.35 m/s2, for what elapsed time does the operator apply the brake?

Accepted Answer

A) 8.44 s 
B) 12.7 s 
C) 3.38 s 
D) 5.92 s 
E) 10.4 s 
A) 8.44 s 
B) 12.7 s 
C) 3.38 s 
D) 5.92 s 
E) 10.4 s

Question 17

2-13
A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s.One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s.
-How long is the ball in the air when it returns to its original position?

Accepted Answer

A) 4.0 s 
B) 4.6 s 
C) 8.0 s 
D) 9.2 s 
E) 16 s 
A) 4.0 s 
B) 4.6 s 
C) 8.0 s 
D) 9.2 s 
E) 16 s

Question 18

2-13
A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s.One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s.
-What is the magnitude of the acceleration due to gravity on the surface of this planet?

Accepted Answer

A) 5.0 m/s2 
B) 9.8 m/s2 
C) 12 m/s2 
D) 15 m/s2 
E) 24 m/s2 
A) 5.0 m/s2 
B) 9.8 m/s2 
C) 12 m/s2 
D) 15 m/s2 
E) 24 m/s2

Question 19

A ball is thrown vertically upward from the surface of the earth.The ball rises to some maximum height and falls back toward the surface of the earth.Which one of the following statements concerning this situation is true if air resistance is neglected?

Accepted Answer

A) As the ball rises, its acceleration vector points upward. 
B) The ball is a freely falling body for the duration of its flight. 
C) The acceleration of the ball is zero when the ball is at its highest point. 
D) The speed of the ball is negative while the ball falls back toward the earth. 
E) The velocity and acceleration of the ball always point in the same direction. 
A) As the ball rises, its acceleration vector points upward. 
B) The ball is a freely falling body for the duration of its flight. 
C) The acceleration of the ball is zero when the ball is at its highest point. 
D) The speed of the ball is negative while the ball falls back toward the earth. 
E) The velocity and acceleration of the ball always point in the same direction.

Question 20

2-1
Peter noticed a bug crawling along a meter stick and decided to record the bug's position in five-second intervals.After the bug crawled off the meter stick, Peter created the table shown.  
-What is the displacement of the bug between t = 0.00 s and t = 20.0 s?

Accepted Answer

A) +39.9 cm 
B) -39.9 cm 
C) +65.7 cm 
D) -16.1 cm 
E) +16.1 cm 
A) +39.9 cm 
B) -39.9 cm 
C) +65.7 cm 
D) -16.1 cm 
E) +16.1 cm

Exam 2: Kinematics in One Dimension

How much time elapses between the throwing of the ball and its return to the original launch point?

A pitcher delivers a fast ball with a velocity of 43 m/s to the south.The batter hits the ball and gives it a velocity of 51 m/s to the north.What was the average acceleration of the ball during the 1.0 ms when it was in contact with the bat?

Approximately how long does it take the tennis ball to reach its maximum height?

A car is initially traveling at 50.0 km/h.The brakes are applied and the car stops over a distance of 35 m.What was magnitude of the car's acceleration while it was braking?

For which one of the following situations will the path length equal the magnitude of the displacement?

Which one of the following situations is not possible?

2-14 A small object is released from rest and falls 1.00 × 102 feet near the surface of the earth.Neglect air resistance. -How long will it take to fall through the 1.00 × 102 feet mentioned?

A ball is thrown vertically upward from the surface of the earth.Consider the following quantities: (1) the speed of the ball; (2) the velocity of the ball; (3) the acceleration of the ball. Which of these is (are) zero when the ball has reached the maximum height?

2-14 A small object is released from rest and falls 1.00 × 102 feet near the surface of the earth.Neglect air resistance. -Approximately how fast will the object be moving after falling through the 1.00 × 102 feet mentioned?

2-15 The figure shows the speed as a function of time for an object in free fall near the surface of the earth. The object was dropped from rest in a long evacuated cylinder. -What is the numerical value of the slope of the line?

2-7 An object is moving along a straight line.The graph shows the object's position from the starting point as a function of time. -What was the instantaneous velocity of the object at t = 4 s?

At time t = 0 s, an object is observed at x = 0 m; and its position along the x axis follows this expression: x = -4t + t2, where the units for distance and time are meters and seconds, respectively.What is the object's displacemen Δ\DeltaΔ x between t = 1.0 s and t = 3.0 s?

2-15 The figure shows the speed as a function of time for an object in free fall near the surface of the earth. The object was dropped from rest in a long evacuated cylinder. -What is the speed of the object 3.0 seconds after it is dropped?

2-3 An object starts from rest and accelerates uniformly in a straight line in the positive x direction. After 11 seconds, its speed is 70.0 m/s. -Determine the acceleration of the object.

A train with a constant velocity of +28.6 m/s approaches a small town .The operator applies the brake, reducing the train's velocity to +11.4 m/s.If the average acceleration of the train during braking is -1.35 m/s2, for what elapsed time does the operator apply the brake?

2-13 A brass ball is shot vertically upward from the surface of an atmosphere-free planet with an initial speed of 20.0 m/s.One second later, the ball has an instantaneous velocity in the upward direction of 15.0 m/s. -How long is the ball in the air when it returns to its original position?

A ball is thrown vertically upward from the surface of the earth.The ball rises to some maximum height and falls back toward the surface of the earth.Which one of the following statements concerning this situation is true if air resistance is neglected?

2-1 Peter noticed a bug crawling along a meter stick and decided to record the bug's position in five-second intervals.After the bug crawled off the meter stick, Peter created the table shown. -What is the displacement of the bug between t = 0.00 s and t = 20.0 s?

Introduction and Mathematical Concepts

Kinematics in Two Dimensions

Forces and Newtons Laws of Motion

Dynamics of Uniform Circular Motion

Work and Energy

Impulse and Momentum

Rotational Kinematics

Rotational Dynamics

Simple Harmonic Motion and Elasticity

Fluids

Temperature and Heat

The Transfer of Heat

The Ideal Gas Law and Kinetic Theory

Thermodynamics

Waves and Sound

The Principle of Linear Superposition and Interference Phenomena

Electric Forces and Electric Fields

Electric Potential Energy and the Electric Potential

Electric Circuits

Magnetic Forces and Magnetic Fields

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

The Reflection of Light: Mirrors

The Refraction of Light: Lenses and Optical Instruments

Interference and the Wave Nature of Light

Special Relativity

Particles and Waves

The Nature of the Atom

Nuclear Physics and Radioactivity

Ionizing Radiation, Nuclear Energy, and Elementary Particles

Filters

2-14 A small object is released from rest and falls 1.00 × 10² feet near the surface of the earth.Neglect air resistance. -How long will it take to fall through the 1.00 × 10²feet mentioned?

2-14 A small object is released from rest and falls 1.00 × 10² feet near the surface of the earth.Neglect air resistance. -Approximately how fast will the object be moving after falling through the 1.00 × 10² feet mentioned?

At time t = 0 s, an object is observed at x = 0 m; and its position along the x axis follows this expression: x = -4t + t², where the units for distance and time are meters and seconds, respectively.What is the object's displacemen $\Delta$ x between t = 1.0 s and t = 3.0 s?

A train with a constant velocity of +28.6 m/s approaches a small town .The operator applies the brake, reducing the train's velocity to +11.4 m/s.If the average acceleration of the train during braking is -1.35 m/s², for what elapsed time does the operator apply the brake?