Question 1

A projectile is fired vertically upward with a speed of 62 m/s. In the absence of air resistance, the maximum height the projectile attains is

Accepted Answer

A)  25 km. 
B)  98 m. 
C)  200 m. 
D)  19 km. 
E)  3 m. 
A)  25 km. 
B)  98 m. 
C)  200 m. 
D)  19 km. 
E)  3 m. C

Question 2

A particle moves from x1 = -50 cm to x2 = 30 cm. The displacement of this particle is

Accepted Answer

A)  50 cm. 
B)  30 cm. 
C)  80 cm. 
D)  -30 cm. 
E)  -80 cm. 
A)  50 cm. 
B)  30 cm. 
C)  80 cm. 
D)  -30 cm. 
E)  -80 cm. C

Question 3

A vehicle is traveling in the -x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the acceleration of the vehicle is

Accepted Answer

A)  positive. 
B)  negative. 
C)  zero. 
D)  positive then negative. 
E)  negative then positive. 
A)  positive. 
B)  negative. 
C)  zero. 
D)  positive then negative. 
E)  negative then positive. A

Question 4

Which graph of v versus t best describes the motion of a particle whose velocity is constant and negative?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 5

In which graph is the particle the farthest from the origin at t = 5 s?

Accepted Answer

A)  1) 
B)  2) 
C)  3) 
D)  4) 
E)  5) 
A)  1) 
B)  2) 
C)  3) 
D)  4) 
E)  5)

Question 6

The motion diagram shows motion an ant moving to the right along a straight line as it is recorded every 1.0 s, starting at point at x = 0.0 cm. Assuming the ant starts from rest, which graph shows ant's velocity as a function of time?

Accepted Answer

A)  1) 
B)  2) 
C)  3) 
D)  4) 
E)  5) 
A)  1) 
B)  2) 
C)  3) 
D)  4) 
E)  5)

Question 7

Which of the following statements is correct?

Accepted Answer

A)  Average velocity is not a vector quantity. 
B)  The average velocity can always be expressed as a half of the sum of initial and final velocities. 
C)  An accelerating body always changes its direction of motion. 
D)  The instantaneous velocity is equal to the time rate of change of the displacement. 
E)  A body undergoing constant acceleration changes its velocity by increasing increments in succeeding equal time intervals. 
A)  Average velocity is not a vector quantity. 
B)  The average velocity can always be expressed as a half of the sum of initial and final velocities. 
C)  An accelerating body always changes its direction of motion. 
D)  The instantaneous velocity is equal to the time rate of change of the displacement. 
E)  A body undergoing constant acceleration changes its velocity by increasing increments in succeeding equal time intervals.

Question 8

Two baseballs are thrown vertically up from the ground at the same speed, one on Earth, and one on Mars. The baseball on Earth reaches a maximum height of 25 m. Which ball hits the ground first and by what time difference? gMars = 0.38 gEarth)

Accepted Answer

A)  Mars by 7.4 s 
B)  Earth by 7.4 s 
C)  Earth by 3.7 s 
D)  Mars by 3.7 s 
E)  Earth by 2.7 s 
A)  Mars by 7.4 s 
B)  Earth by 7.4 s 
C)  Earth by 3.7 s 
D)  Mars by 3.7 s 
E)  Earth by 2.7 s

Question 9

The distance traveled by a car in the x-direction is shown. When the car changes speed for t = 10 s to 15 s, it does so uniformly.   The acceleration of the car at 5 s ____ acceleration at 20 s.

Accepted Answer

A)  is less than the 
B)  is equal to the 
C)  is greater than the 
D)  cannot be determined for fore. depends on what happens when it is accelerating between 10 and 15 s 
A)  is less than the 
B)  is equal to the 
C)  is greater than the 
D)  cannot be determined for fore. depends on what happens when it is accelerating between 10 and 15 s

Question 10

On a graph that shows position on the vertical axis and time on the horizontal axis, a parabolic curve that opens upward represents

Accepted Answer

A)  a motion with constant positive acceleration. 
B)  a motion with constant negative acceleration. 
C)  a motion with no acceleration. 
D)  a motion with positive acceleration followed by a motion with negative acceleration. 
E)  a motion with negative acceleration followed by a motion with positive acceleration. 
A)  a motion with constant positive acceleration. 
B)  a motion with constant negative acceleration. 
C)  a motion with no acceleration. 
D)  a motion with positive acceleration followed by a motion with negative acceleration. 
E)  a motion with negative acceleration followed by a motion with positive acceleration.

Question 11

An object is moving in a straight line. At t = 0, its speed is 5.0 m/s. From t = 0 to t = 4.0 s, its acceleration is 2.5 m/s2. From t = 4.0 s to t = 11.0 s, its speed is constant. The average speed over the entire time interval is

Accepted Answer

A)  9.5 m/s. 
B)  15 m/s. 
C)  13 m/s. 
D)  21 m/s. 
E)  8.2 m/s. 
A)  9.5 m/s. 
B)  15 m/s. 
C)  13 m/s. 
D)  21 m/s. 
E)  8.2 m/s.

Question 12

An object falling near the surface of Earth has a constant acceleration of 9.8 m/s2. This means that the

Accepted Answer

A)  object falls 9.8 m during the first second of its motion. 
B)  object falls 9.8 m during each second of its motion. 
C)  speed of the object increases by 9.8 m/s during each second of its motion. 
D)  acceleration of the object increases by 9.8 m/s2 during each second of its motion. 
E)  force of gravity on the object must be 9.8 SI units. 
A)  object falls 9.8 m during the first second of its motion. 
B)  object falls 9.8 m during each second of its motion. 
C)  speed of the object increases by 9.8 m/s during each second of its motion. 
D)  acceleration of the object increases by 9.8 m/s2 during each second of its motion. 
E)  force of gravity on the object must be 9.8 SI units.

Question 13

An object moves along the x-axis as shown in the diagram.   At which point or points is the object's instantaneous velocity zero?

Accepted Answer

A)  A and E 
B)  B, D, and E 
C)  C only 
D)  E only 
E)  None of these are correct. 
A)  A and E 
B)  B, D, and E 
C)  C only 
D)  E only 
E)  None of these are correct.

Question 14

Two of the graphs shown are INCORRECT for a particle undergoing one-dimensional motion with constant acceleration.   They are

Accepted Answer

A)  1) and 2). 
B)  2) and 3). 
C)  3) and 4). 
D)  4) and 5). 
E)  10 and 5). 
A)  1) and 2). 
B)  2) and 3). 
C)  3) and 4). 
D)  4) and 5). 
E)  10 and 5).

Question 15

Which of the following is NOT an example of one dimensional, linear motion?

Accepted Answer

A)  An airliner accelerating down the runway. 
B)  A rocket climbing upward from a launch pad. 
C)  A rock dropped toward the ground. 
D)  An electron orbiting around an atom. 
E)  A swimmer swimming two lengths of a pool there and back). 
A)  An airliner accelerating down the runway. 
B)  A rocket climbing upward from a launch pad. 
C)  A rock dropped toward the ground. 
D)  An electron orbiting around an atom. 
E)  A swimmer swimming two lengths of a pool there and back).

Question 16

On a graph that shows velocity on the vertical axis and time on the horizontal axis, constant acceleration is represented by

Accepted Answer

A)  a straight line with a positive slope. 
B)  a straight line with a negative slope. 
C)  a straight line with zero slope. 
D)  either a positive, negative, or zero slope. 
E)  None of these are correct. 
A)  a straight line with a positive slope. 
B)  a straight line with a negative slope. 
C)  a straight line with zero slope. 
D)  either a positive, negative, or zero slope. 
E)  None of these are correct.

Question 17

Four successive displacements of 3 km, 4 km, 5 km, and 4 km are at right angles to each other as shown in the diagram.   The magnitude of the resultant displacement is

Accepted Answer

A)  2 km. 
B)  16 km. 
C)  -16 km. 
D)  -2 km. 
E)  0 km. 
A)  2 km. 
B)  16 km. 
C)  -16 km. 
D)  -2 km. 
E)  0 km.

Question 18

A particle accelerates uniformly from a speed of 30 cm/s to 40 cm/s in 5 s and thereafter moves at a constant speed of 40 cm/s for an additional 3 s. The average speed over this total time interval is

Accepted Answer

A)  35 cm/s. 
B)  27 cm/s. 
C)  0.45 cm/s. 
D)  37 cm/s. 
E)  73 cm/s. 
A)  35 cm/s. 
B)  27 cm/s. 
C)  0.45 cm/s. 
D)  37 cm/s. 
E)  73 cm/s.

Question 19

The graph represents the position of a particle along the x axis as a function of time.   Which interval has the highest magnitude of acceleration?

Accepted Answer

A)  a-b 
B)  b-c 
C)  c-d 
D)  d-e 
E)  They have equal acceleration 
A)  a-b 
B)  b-c 
C)  c-d 
D)  d-e 
E)  They have equal acceleration

Question 20

A vehicle is traveling in the +x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the acceleration of the vehicle is

Accepted Answer

A)  positive. 
B)  negative. 
C)  zero. 
D)  positive then negative. 
E)  negative then positive. 
A)  positive. 
B)  negative. 
C)  zero. 
D)  positive then negative. 
E)  negative then positive.

Exam 2: Linear Motion

A projectile is fired vertically upward with a speed of 62 m/s. In the absence of air resistance, the maximum height the projectile attains is

A particle moves from x1 = -50 cm to x2 = 30 cm. The displacement of this particle is

A vehicle is traveling in the -x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the acceleration of the vehicle is

Which graph of v versus t best describes the motion of a particle whose velocity is constant and negative?

In which graph is the particle the farthest from the origin at t = 5 s?

The motion diagram shows motion an ant moving to the right along a straight line as it is recorded every 1.0 s, starting at point at x = 0.0 cm. Assuming the ant starts from rest, which graph shows ant's velocity as a function of time?

Which of the following statements is correct?

Two baseballs are thrown vertically up from the ground at the same speed, one on Earth, and one on Mars. The baseball on Earth reaches a maximum height of 25 m. Which ball hits the ground first and by what time difference? gMars = 0.38 gEarth)

The distance traveled by a car in the x-direction is shown. When the car changes speed for t = 10 s to 15 s, it does so uniformly. The acceleration of the car at 5 s ____ acceleration at 20 s.

On a graph that shows position on the vertical axis and time on the horizontal axis, a parabolic curve that opens upward represents

An object is moving in a straight line. At t = 0, its speed is 5.0 m/s. From t = 0 to t = 4.0 s, its acceleration is 2.5 m/s2. From t = 4.0 s to t = 11.0 s, its speed is constant. The average speed over the entire time interval is

An object falling near the surface of Earth has a constant acceleration of 9.8 m/s2. This means that the

An object moves along the x-axis as shown in the diagram. At which point or points is the object's instantaneous velocity zero?

Two of the graphs shown are INCORRECT for a particle undergoing one-dimensional motion with constant acceleration. They are

Which of the following is NOT an example of one dimensional, linear motion?

On a graph that shows velocity on the vertical axis and time on the horizontal axis, constant acceleration is represented by

Four successive displacements of 3 km, 4 km, 5 km, and 4 km are at right angles to each other as shown in the diagram. The magnitude of the resultant displacement is

A particle accelerates uniformly from a speed of 30 cm/s to 40 cm/s in 5 s and thereafter moves at a constant speed of 40 cm/s for an additional 3 s. The average speed over this total time interval is

The graph represents the position of a particle along the x axis as a function of time. Which interval has the highest magnitude of acceleration?

A vehicle is traveling in the +x direction to x = 100 m. It then reverses direction. At the instant when it changes direction, the acceleration of the vehicle is

Introduction to Physics

Motion in Two and Three Dimensions

Forces and Motion I: Newtons Laws

Forces and Motion II: Applications

Work and Energy

Momentum, Collisions, and the Center of Mass

Rotational Motion

Elastic Properties of Matter: Stress and Strain

Gravitation

Fluids

Oscillations

Waves

Thermodynamics I

Thermodynamics II

Electrostatics I: Electric Charge, Forces, and Fields

Electrostatics II: Electric Potential Energy and Electric Potential

Electric Charges in Motion

Magnetism

Electromagnetic Induction

Alternating-Current Circuits

Electromagnetic Waves

Wave Properties of Light

Geometrical Optics

Relativity

Quantum Physics and Atomic Structure

Nuclear Physics

Particle Physics

Filters

A particle moves from x₁ = -50 cm to x₂ = 30 cm. The displacement of this particle is

Two baseballs are thrown vertically up from the ground at the same speed, one on Earth, and one on Mars. The baseball on Earth reaches a maximum height of 25 m. Which ball hits the ground first and by what time difference? g_Mars = 0.38 g_Earth)

An object is moving in a straight line. At t = 0, its speed is 5.0 m/s. From t = 0 to t = 4.0 s, its acceleration is 2.5 m/s². From t = 4.0 s to t = 11.0 s, its speed is constant. The average speed over the entire time interval is

An object falling near the surface of Earth has a constant acceleration of 9.8 m/s². This means that the