Question 1

An object is shot vertically upward.While it is rising:

Accepted Answer

A) its velocity and acceleration are both upward 
B) its velocity is upward and its acceleration is downward 
C) its velocity and acceleration are both downward 
D) its velocity is downward and its acceleration is upward 
E) its velocity and acceleration are both decreasing 
A) its velocity and acceleration are both upward 
B) its velocity is upward and its acceleration is downward 
C) its velocity and acceleration are both downward 
D) its velocity is downward and its acceleration is upward 
E) its velocity and acceleration are both decreasing

Question 2

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in a negative displacement?

Accepted Answer

A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = -4m, x f = -2m 
E) xi = -4m, x f = 4m 
A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = -4m, x f = -2m 
E) xi = -4m, x f = 4m

Question 3

A car, initially at rest, travels 20 m in 4 s along a straight line with constant acceleration.The acceleration of the car is:

Accepted Answer

A) 1.3 m/s2 
B) 2.5 m/s2 
C) 4.9 m/s2 
D) 9.8 m/s2 
E) There is not enough information to answer this question. 
A) 1.3 m/s2 
B) 2.5 m/s2 
C) 4.9 m/s2 
D) 9.8 m/s2 
E) There is not enough information to answer this question.

Question 4

A ball is thrown upwards.Its acceleration is:

Accepted Answer

A) downward during both ascent and descent 
B) downward during ascent and upward during descent 
C) upward during ascent and downward during descent 
D) upward during both ascent and descent 
E) downward at all times except at the very top, when it is zero 
A) downward during both ascent and descent 
B) downward during ascent and upward during descent 
C) upward during ascent and downward during descent 
D) upward during both ascent and descent 
E) downward at all times except at the very top, when it is zero

Question 5

A stone is released from a balloon that is descending at a constant speed of 10 m/s.Neglecting air resistance, after 20 s the speed of the stone is:

Accepted Answer

A) 2160 m/s 
B) 1760 m/s 
C) 206 m/s 
D) 196 m/s 
E) 186 m/s 
A) 2160 m/s 
B) 1760 m/s 
C) 206 m/s 
D) 196 m/s 
E) 186 m/s

Question 6

Starting at time t = 0, an object moves along a straight line with velocity in m/s given by v(t)= 98 - 2t2, where t is in seconds.When it momentarily stops its acceleration is:

Accepted Answer

A) 0 m/s2 
B) -4.0 m/s2 
C) -9.8 m/s2 
D) -28 m/s2 
E) 49 m/s2 
A) 0 m/s2 
B) -4.0 m/s2 
C) -9.8 m/s2 
D) -28 m/s2 
E) 49 m/s2

Question 7

A baseball is hit straight up and is caught by the catcher 2.0 s later, at the same height at which it left the bat.The maximum height of the ball during this interval is:

Accepted Answer

A) 4.9 m 
B) 7.4 m 
C) 12.4 m 
D) 19.6 m 
E) 38.8 m 
A) 4.9 m 
B) 7.4 m 
C) 12.4 m 
D) 19.6 m 
E) 38.8 m

Question 8

An object is released from rest.How far does it fall during the second second of its fall?

Accepted Answer

A) 4.9 m 
B) 9.8 m 
C) 15 m 
D) 20 m 
E) 25 m 
A) 4.9 m 
B) 9.8 m 
C) 15 m 
D) 20 m 
E) 25 m

Question 9

Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x(t)= 27t - 4.0t3, where t is in seconds.At the end of 1.0 s the acceleration of the auto is:

Accepted Answer

A) 23 m/s2 
B) 15 m/s2 
C) -4.0 m/s2 
D) -12 m/s2 
E) -24 m/s2 
A) 23 m/s2 
B) 15 m/s2 
C) -4.0 m/s2 
D) -12 m/s2 
E) -24 m/s2

Question 10

The average speed of a moving object during a given interval of time is always:

Accepted Answer

A) the magnitude of its average velocity over the interval 
B) the distance covered during the time interval divided by the time interval 
C) one-half its speed at the end of the interval 
D) its acceleration multiplied by the time interval 
E) one-half its acceleration multiplied by the time interval. 
A) the magnitude of its average velocity over the interval 
B) the distance covered during the time interval divided by the time interval 
C) one-half its speed at the end of the interval 
D) its acceleration multiplied by the time interval 
E) one-half its acceleration multiplied by the time interval.

Question 11

Displacement can be obtained from:

Accepted Answer

A) the slope of an acceleration-time graph 
B) the slope of a velocity-time graph 
C) the area under an acceleration-time graph 
D) the area under a velocity-time graph 
A) the slope of an acceleration-time graph 
B) the slope of a velocity-time graph 
C) the area under an acceleration-time graph 
D) the area under a velocity-time graph

Question 12

A particle moves along the x axis according to the equation x = 6t2 where x is in meters and t is in seconds.Therefore:

Accepted Answer

A) the acceleration of the particle is 6 m/s2 
B) t cannot be negative 
C) the particle follows a parabolic path 
D) each second the velocity of the particle changes by 9.8 m/s 
E) none of the above 
A) the acceleration of the particle is 6 m/s2 
B) t cannot be negative 
C) the particle follows a parabolic path 
D) each second the velocity of the particle changes by 9.8 m/s 
E) none of the above

Question 13

How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s2 in the same direction as its initial velocity?

Accepted Answer

A) 12 m 
B) 14 m 
C) 24 m 
D) 36 m 
E) 48 m 
A) 12 m 
B) 14 m 
C) 24 m 
D) 36 m 
E) 48 m

Question 14

Each of four particles moves along an x axis.Their coordinates (in meters)as functions of time (in seconds)are given by   Which of these particles have constant acceleration?

Accepted Answer

A) All four 
B) Only 1 and 2 
C) Only 2 and 3 
D) Only 3 and 4 
E) None of them 
A) All four 
B) Only 1 and 2 
C) Only 2 and 3 
D) Only 3 and 4 
E) None of them

Question 15

As a rocket is accelerating vertically upward at 9.8 m/s2 near the Earth's surface, it releases a projectile.Immediately after release the acceleration of the projectile is:

Accepted Answer

A) 9.8 m/s2 down 
B) 0 m/s2 
C) 9.8 m/s2 up 
D) 19.6 m/s2 up 
E) none of the above 
A) 9.8 m/s2 down 
B) 0 m/s2 
C) 9.8 m/s2 up 
D) 19.6 m/s2 up 
E) none of the above

Question 16

One object is thrown vertically upward with an initial velocity of 100 m/s and another object with an initial velocity of 10 m/s.The maximum height reached by the first object will be _______ that of the other.

Accepted Answer

A) 10 times 
B) 100 times 
C) 1000 times 
D) 10,000 times 
E) none of these 
A) 10 times 
B) 100 times 
C) 1000 times 
D) 10,000 times 
E) none of these

Question 17

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?

Accepted Answer

A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = 4m, x f = -2m 
E) xi = -4m, x f = 4m 
A) xi = 4m, x f = 6m 
B) xi = -4m, x f = -8m 
C) xi = -4m, x f = 2m 
D) xi = 4m, x f = -2m 
E) xi = -4m, x f = 4m

Question 18

What is the relationship between instantaneous speed and instantaneous velocity?

Accepted Answer

A) They are identical. 
B) Instantaneous speed is the rate at which the instantaneous velocity is changing. 
C) Instantaneous speed is the magnitude of the instantaneous velocity. 
D) They are unrelated. 
E) Instantaneous speed is the initial speed minus the final speed. 
A) They are identical. 
B) Instantaneous speed is the rate at which the instantaneous velocity is changing. 
C) Instantaneous speed is the magnitude of the instantaneous velocity. 
D) They are unrelated. 
E) Instantaneous speed is the initial speed minus the final speed.

Question 19

If you drop a rock and a feather, the rock hits the ground first.This demonstrates that:

Accepted Answer

A) The acceleration of gravity is not constant. 
B) Heavier objects are accelerated faster by gravity than lighter objects are. 
C) Air resistance has a larger effect on feathers than on rocks. 
D) Rocks can't fly. 
E) Gravity has little effect on a feather. 
A) The acceleration of gravity is not constant. 
B) Heavier objects are accelerated faster by gravity than lighter objects are. 
C) Air resistance has a larger effect on feathers than on rocks. 
D) Rocks can't fly. 
E) Gravity has little effect on a feather.

Question 20

A stone is dropped from a cliff.The graph (carefully note the axes)that best represents its motion while it falls is:

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Exam 2: Motion Along a Straight Line

An object is shot vertically upward.While it is rising:

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in a negative displacement?

A car, initially at rest, travels 20 m in 4 s along a straight line with constant acceleration.The acceleration of the car is:

A ball is thrown upwards.Its acceleration is:

A stone is released from a balloon that is descending at a constant speed of 10 m/s.Neglecting air resistance, after 20 s the speed of the stone is:

Starting at time t = 0, an object moves along a straight line with velocity in m/s given by v(t)= 98 - 2t2, where t is in seconds.When it momentarily stops its acceleration is:

A baseball is hit straight up and is caught by the catcher 2.0 s later, at the same height at which it left the bat.The maximum height of the ball during this interval is:

An object is released from rest.How far does it fall during the second second of its fall?

Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x(t)= 27t - 4.0t3, where t is in seconds.At the end of 1.0 s the acceleration of the auto is:

The average speed of a moving object during a given interval of time is always:

Displacement can be obtained from:

A particle moves along the x axis according to the equation x = 6t2 where x is in meters and t is in seconds.Therefore:

How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s2 in the same direction as its initial velocity?

Each of four particles moves along an x axis.Their coordinates (in meters)as functions of time (in seconds)are given by Which of these particles have constant acceleration?

As a rocket is accelerating vertically upward at 9.8 m/s2 near the Earth's surface, it releases a projectile.Immediately after release the acceleration of the projectile is:

One object is thrown vertically upward with an initial velocity of 100 m/s and another object with an initial velocity of 10 m/s.The maximum height reached by the first object will be _______ that of the other.

A particle moves along the x axis from xi to x f .Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?

What is the relationship between instantaneous speed and instantaneous velocity?

If you drop a rock and a feather, the rock hits the ground first.This demonstrates that:

A stone is dropped from a cliff.The graph (carefully note the axes)that best represents its motion while it falls is:

Measurement

Vector

Motion in Two and Three Dimensions

Force and Motion I

Force and Motion II

Kinetic Energy and Work

Potential Energy and Conservation of Energy

Center of Mass and Linear Momentum

Rotation

Rolling, Torque, and Angular Momentum

Equilibrium and Elasticity

Gravitation

Fluids

Oscillations

Waves I

Waves II

Temperature, Heat, and the First Law of Thermodynamics

The Kinetic Theory of Gases

Entropy and the Second Law of Thermodynamics

Electric Charge

Electric Fields

Gauss Law

Electric Potential

Capacitance

Current and Resistance

Circuits

Magnetic Fields

Magnetic Fields Due to Currents

Induction and Inductance

Electromagnetic Oscillations and Alternating Current

Maxwells Equations; Magnetism of Matter

Electromagnetic Waves

Images

Interference

Diffraction

Relativity

Photons and Matter Waves

More About Matter Waves

All About Atoms

Conduction of Electricity in Solids

Nuclear Physics

Energy From the Nucleus

Quarks, Leptons, and the Big Bang

Filters

A particle moves along the x axis from x_i to x_f.Of the following values of the initial and final coordinates, which results in a negative displacement?

Starting at time t = 0, an object moves along a straight line with velocity in m/s given by v(t)= 98 - 2t², where t is in seconds.When it momentarily stops its acceleration is:

Over a short interval near time t = 0 the coordinate of an automobile in meters is given by x(t)= 27t - 4.0t³, where t is in seconds.At the end of 1.0 s the acceleration of the auto is:

A particle moves along the x axis according to the equation x = 6t² where x is in meters and t is in seconds.Therefore:

How far does a car travel in 6 s if its initial velocity is 2 m/s and its acceleration is 2 m/s² in the same direction as its initial velocity?

As a rocket is accelerating vertically upward at 9.8 m/s² near the Earth's surface, it releases a projectile.Immediately after release the acceleration of the projectile is:

A particle moves along the x axis from x_i to x_f.Of the following values of the initial and final coordinates, which results in the displacement with the largest magnitude?