Question 1

What is the speed of the particle after it has traveled 8 m?

Accepted Answer

A) 4 m/s 
B) 8 m/s 
C) 30 m/s 
D) 60 m/s 
E) 100 m/s 
A) 4 m/s 
B) 8 m/s 
C) 30 m/s 
D) 60 m/s 
E) 100 m/s

Question 2

2-8
An object is moving along a straight line.The graph shows the object's velocity as a function of time.  
-During which interval(s) of the graph does the object travel equal distances in equal times?

Accepted Answer

A) 0 s to 2 s 
B) 2 s to 3 s 
C) 3 s to 5 s 
D) 0 s to 2 s and 3 s to 5 s 
E) 0 s to 2 s, 3 to 5 s, and 5 to 6 s 
A) 0 s to 2 s 
B) 2 s to 3 s 
C) 3 s to 5 s 
D) 0 s to 2 s and 3 s to 5 s 
E) 0 s to 2 s, 3 to 5 s, and 5 to 6 s

Question 3

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.
-Determine the velocity of the ball when it returns to its original position.Note: assume the upward direction is positive.

Accepted Answer

A) +20 m/s 
B) -20 m/s 
C) +40 m/s 
D) -40 m/s 
E) zero m/s 
A) +20 m/s 
B) -20 m/s 
C) +40 m/s 
D) -40 m/s 
E) zero m/s

Question 4

2-12
A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters.
-How long did it take the object to fall the 8.0 meters mentioned?

Accepted Answer

A) 0.40 s 
B) 0.80 s 
C) 1.3 s 
D) 2.5 s 
E) 16 s 
A) 0.40 s 
B) 0.80 s 
C) 1.3 s 
D) 2.5 s 
E) 16 s

Question 5

A rock is dropped from rest from a height h above the ground.It falls and hits the ground with a speed of 11 m/s.From what height should the rock be dropped so that its speed on hitting the ground is 22 m/s? Neglect air resistance.

Accepted Answer

A) 1.4h 
B) 2.0h 
C) 3.0h 
D) 4.0h 
E) 0.71h 
A) 1.4h 
B) 2.0h 
C) 3.0h 
D) 4.0h 
E) 0.71h

Question 6

An object moving along a straight line is decelerating.Which one of the following statements concerning the object's acceleration is necessarily true?

Accepted Answer

A) The value of the acceleration is positive. 
B) The direction of the acceleration is in the same direction as the displacement. 
C) An object that is decelerating has a negative acceleration. 
D) The direction of the acceleration is in the direction opposite to that of the velocity. 
E) The acceleration changes as the object moves along the line. 
A) The value of the acceleration is positive. 
B) The direction of the acceleration is in the same direction as the displacement. 
C) An object that is decelerating has a negative acceleration. 
D) The direction of the acceleration is in the direction opposite to that of the velocity. 
E) The acceleration changes as the object moves along the line.

Question 7

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$r.
-In which one of the following situations does the car have a westward acceleration?

Accepted Answer

A) The car travels westward at constant speed. 
B) The car travels eastward and speeds up. 
C) The car travels westward and slows down. 
D) The car travels eastward and slows down. 
E) The car starts from rest and moves toward the east. 
A) The car travels westward at constant speed. 
B) The car travels eastward and speeds up. 
C) The car travels westward and slows down. 
D) The car travels eastward and slows down. 
E) The car starts from rest and moves toward the east.

Question 8

A race car has a speed of 80 m/s when the driver releases a drag parachute.If the parachute causes a deceleration of -4 m/s2, how far will the car travel before it stops?

Accepted Answer

A) 20 m 
B) 200 m 
C) 400 m 
D) 800 m 
E) 1000 m 
A) 20 m 
B) 200 m 
C) 400 m 
D) 800 m 
E) 1000 m

Question 9

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$r.
-When the car has traveled halfway around the track, what is the magnitude of its displacement from the starting point?

Accepted Answer

A) r 
B) 2r 
C) ( $\pi$r) 
D) (2 $\pi$r) 
E) zero meters 
A) r 
B) 2r 
C) ( $\pi$r) 
D) (2 $\pi$r) 
E) zero meters

Question 10

2-9
An object is moving along a straight line in the positive x direction.The graph shows its position from the starting point as a function of time.Various segments of the graph are identified by the letters A, B, C, and D.  
-During which interval(s) did the object move in the negative x direction?

Accepted Answer

A) only during interval B 
B) only during interval C 
C) only during interval D 
D) during both intervals C and D 
E) The object never moved in the negative x direction. 
A) only during interval B 
B) only during interval C 
C) only during interval D 
D) during both intervals C and D 
E) The object never moved in the negative x direction.

Question 11

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$r.
-What is the average speed of the car for one complete lap?

Accepted Answer

A)    
B)    
C)    
D)    
E) zero meters/second 
A)    
B)    
C)    
D)    
E) zero meters/second

Question 12

A truck accelerates from rest at point A with constant acceleration of magnitude a and, subsequently, passes points B and C as shown in the figure.   The distance between points B and C is x, and the time required for the truck to travel from B to C is t.Which expression determines the average speed of the truck between the points B and C?

Accepted Answer

A) v2 = 2ax 
B)    
C) v = xt 
D)    
E) v = at 
A) v2 = 2ax 
B)    
C) v = xt 
D)    
E) v = at

Question 13

Two cars travel along a level highway.It is observed that the distance between the cars is increasing.Which one of the following statements concerning this situation is necessarily true?

Accepted Answer

A) The velocity of each car is increasing. 
B) At least one of the cars has a non-zero acceleration. 
C) The leading car has the greater acceleration. 
D) The trailing car has the smaller acceleration. 
E) Both cars could be accelerating at the same rate. 
A) The velocity of each car is increasing. 
B) At least one of the cars has a non-zero acceleration. 
C) The leading car has the greater acceleration. 
D) The trailing car has the smaller acceleration. 
E) Both cars could be accelerating at the same rate.

Question 14

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 total distance that the bug traveled between t = 0.00 s and t = 20.0 s? Assume the bug only changed directions at the end of a five-second interval.

Accepted Answer

A) 39.9 cm 
B) 65.7 cm 
C) 16.1 cm 
D) 47.1 cm 
E) 26.5 cm 
A) 39.9 cm 
B) 65.7 cm 
C) 16.1 cm 
D) 47.1 cm 
E) 26.5 cm

Question 15

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 high does the ball rise?

Accepted Answer

A) 70.0 m 
B) 10.0 m 
C) 50.0 m 
D) 20.0 m 
E) 40.0 m 
A) 70.0 m 
B) 10.0 m 
C) 50.0 m 
D) 20.0 m 
E) 40.0 m

Question 16

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.
-How far does the object travel during the first 11 seconds?

Accepted Answer

A) 35 m 
B) 77 m 
C) 390 m 
D) 590 m 
E) 770 m 
A) 35 m 
B) 77 m 
C) 390 m 
D) 590 m 
E) 770 m

Question 17

2-6
An object is moving along the x axis.The graph shows its position from the starting point as a function of time.Various segments of the graph are identified by the letters A, B, C, and D.  
-During which interval(s) is(are) the object moving in the negative x direction?

Accepted Answer

A) during interval B only 
B) during intervals B and C 
C) during intervals C and D 
D) during intervals B and D 
E) during intervals B, C, and D 
A) during interval B only 
B) during intervals B and C 
C) during intervals C and D 
D) during intervals B and D 
E) during intervals B, C, and D

Question 18

The minimum takeoff speed for a certain airplane is 75 m/s.What minimum acceleration is required if the plane must leave a runway of length 1050 m? Assume the plane starts from rest at one end of the runway.

Accepted Answer

A) 1.5 m/s2 
B) 3.0 m/s2 
C) 4.5 m/s2 
D) 6.0 m/s2 
E) 2.7 m/s2 
A) 1.5 m/s2 
B) 3.0 m/s2 
C) 4.5 m/s2 
D) 6.0 m/s2 
E) 2.7 m/s2

Question 19

In which one of the following cases is the displacement of the object directly proportional to the elapsed time?

Accepted Answer

A) a ball rolls with constant velocity 
B) a ball at rest is given a constant acceleration 
C) a ball rolling with velocity vo is given a constant acceleration 
D) a bead falling through oil experiences a decreasing acceleration 
E) a rocket fired from the earth's surface experiences an increasing acceleration 
A) a ball rolls with constant velocity 
B) a ball at rest is given a constant acceleration 
C) a ball rolling with velocity vo is given a constant acceleration 
D) a bead falling through oil experiences a decreasing acceleration 
E) a rocket fired from the earth's surface experiences an increasing acceleration

Question 20

A car traveling along a road begins accelerating with a constant acceleration of 1.5 m/s2 in the direction of motion.After traveling 392 m at this acceleration, its speed is 35 m/s.Determine the speed of the car when it began accelerating.

Accepted Answer

A) 1.5 m/s 
B) 7.0 m/s 
C) 34 m/s 
D) 49 m/s 
E) 2.3 m/s 
A) 1.5 m/s 
B) 7.0 m/s 
C) 34 m/s 
D) 49 m/s 
E) 2.3 m/s

Exam 2: Kinematics in One Dimension

What is the speed of the particle after it has traveled 8 m?

2-8 An object is moving along a straight line.The graph shows the object's velocity as a function of time. -During which interval(s) of the graph does the object travel equal distances in equal times?

2-12 A rock, dropped from rest near the surface of an atmosphere-free planet, attains a speed of 20.0 m/s after falling 8.0 meters. -How long did it take the object to fall the 8.0 meters mentioned?

A rock is dropped from rest from a height h above the ground.It falls and hits the ground with a speed of 11 m/s.From what height should the rock be dropped so that its speed on hitting the ground is 22 m/s? Neglect air resistance.

An object moving along a straight line is decelerating.Which one of the following statements concerning the object's acceleration is necessarily true?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 π\piπ r. -In which one of the following situations does the car have a westward acceleration?

A race car has a speed of 80 m/s when the driver releases a drag parachute.If the parachute causes a deceleration of -4 m/s2, how far will the car travel before it stops?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 π\piπ r. -When the car has traveled halfway around the track, what is the magnitude of its displacement from the starting point?

2-9 An object is moving along a straight line in the positive x direction.The graph shows its position from the starting point as a function of time.Various segments of the graph are identified by the letters A, B, C, and D. -During which interval(s) did the object move in the negative x direction?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 π\piπ r. -What is the average speed of the car for one complete lap?

Two cars travel along a level highway.It is observed that the distance between the cars is increasing.Which one of the following statements concerning this situation is necessarily true?

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 high does the ball rise?

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. -How far does the object travel during the first 11 seconds?

2-6 An object is moving along the x axis.The graph shows its position from the starting point as a function of time.Various segments of the graph are identified by the letters A, B, C, and D. -During which interval(s) is(are) the object moving in the negative x direction?

The minimum takeoff speed for a certain airplane is 75 m/s.What minimum acceleration is required if the plane must leave a runway of length 1050 m? Assume the plane starts from rest at one end of the runway.

In which one of the following cases is the displacement of the object directly proportional to the elapsed time?

A car traveling along a road begins accelerating with a constant acceleration of 1.5 m/s2 in the direction of motion.After traveling 392 m at this acceleration, its speed is 35 m/s.Determine the speed of the car when it began accelerating.

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

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$ r. -In which one of the following situations does the car have a westward acceleration?

A race car has a speed of 80 m/s when the driver releases a drag parachute.If the parachute causes a deceleration of -4 m/s², how far will the car travel before it stops?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$ r. -When the car has traveled halfway around the track, what is the magnitude of its displacement from the starting point?

A racecar, traveling at constant speed, makes one lap around a circular track of radius r in a time t.Note: The circumference of a circle is given by C = 2 $\pi$ r. -What is the average speed of the car for one complete lap?

A car traveling along a road begins accelerating with a constant acceleration of 1.5 m/s²in the direction of motion.After traveling 392 m at this acceleration, its speed is 35 m/s.Determine the speed of the car when it began accelerating.