Question 1

A 5.00 kg ball is moving at 4.0 m/s to the right and a 6.00 kg ball is moving at 3.00 m/s to the left.The total momentum of the system is

Accepted Answer

A)  2.0 kg m/s to the right. 
B)  2.0 kg m/s to the left. 
C)  38 kg m/s to the right. 
D)  18 kg m/s to the left. 
E)  20 kg m/s to the right. 
A)  2.0 kg m/s to the right. 
B)  2.0 kg m/s to the left. 
C)  38 kg m/s to the right. 
D)  18 kg m/s to the left. 
E)  20 kg m/s to the right.

Question 2

A 100.0 kg mass is blown apart into a 95.00 kg piece and a 5.000 kg piece.After the blast,the two masses are moving apart with a relative velocity of 100.0 m/s.The kinetic energy of the 5.000 kg mass after the explosion is

Accepted Answer

A)  6,850 J. 
B)  7,500 J. 
C)  9,570 J. 
D)  11,500 J. 
E)  22,560 J. 
A)  6,850 J. 
B)  7,500 J. 
C)  9,570 J. 
D)  11,500 J. 
E)  22,560 J.

Question 3

If the kinetic energy of a ball is doubled,then the momentum is

Accepted Answer

A)  0.50 times larger. 
B)  0.71 times larger. 
C)  1.00 times larger. 
D)  1.41 times larger. 
E)  1.50 times larger. 
A)  0.50 times larger. 
B)  0.71 times larger. 
C)  1.00 times larger. 
D)  1.41 times larger. 
E)  1.50 times larger.

Question 4

Mass 30.0 g is located at the origin.Where is mass 10.0 g located if the coordinates of the center of mass are (0.00 cm,10.0 cm)?

Accepted Answer

A)  (0.00 cm,20.0 cm) 
B)  (0.00 cm,5.00 cm) 
C)  (0.00 cm,7.50 cm) 
A)  (0.00 cm,20.0 cm) 
B)  (0.00 cm,5.00 cm) 
C)  (0.00 cm,7.50 cm)

Question 5

A 1200 kg car is traveling at 3.00 m/s and strikes a wall.The 1200 kg car bounces off the wall with a velocity of 4.00 m/s.If the contact with the wall by the car lasts for 0.10 seconds,then the average force on the car is

Accepted Answer

A)  46,000 N. 
B)  55,000 N. 
C)  63,000 N. 
D)  75,000 N. 
E)  84,000 N. 
A)  46,000 N. 
B)  55,000 N. 
C)  63,000 N. 
D)  75,000 N. 
E)  84,000 N.

Question 6

A 100 kg mass is blown apart into a 50.0 kg piece and a 50.0 kg piece.After the blast,the two masses are moving apart with a relative velocity of 100 m/s.The total kinetic energy after the explosion is

Accepted Answer

A)  8.42 $\times$ 104 J. 
B)  1.25 $\times$ 105 J. 
C)  3.62 $\times$ 105 J. 
D)  6.50 $\times$ 105 J. 
E)  1.24 $\times$ 106 J. 
A)  8.42 $\times$ 104 J. 
B)  1.25 $\times$ 105 J. 
C)  3.62 $\times$ 105 J. 
D)  6.50 $\times$ 105 J. 
E)  1.24 $\times$ 106 J.

Question 7

An 1800 kg car traveling at 35.0 m/s strikes a wall.If the car comes to rest in 0.500 seconds,then the average force of the wall on the car is

Accepted Answer

A)  0.330 $\times$ 105 N. 
B)  0.640 $\times$ 105 N. 
C)  1.26 $\times$ 105 N. 
D)  2.77 $\times$ 105 N. 
E)  3.33 $\times$ 105 N. 
A)  0.330 $\times$ 105 N. 
B)  0.640 $\times$ 105 N. 
C)  1.26 $\times$ 105 N. 
D)  2.77 $\times$ 105 N. 
E)  3.33 $\times$ 105 N.

Question 8

A vertical spring is compressed and when released applies a force during a 0.25 s time interval to a 17 g frog,which is flung upward due to the applied force from the spring.If the frog attains a velocity of 11 m/s after being released from the spring,what average force was applied by the spring?

Accepted Answer

A)  0.21 N 
B)  0.91 N 
C)  0.75 N 
D)  0.17 N 
E)  0.58 N 
A)  0.21 N 
B)  0.91 N 
C)  0.75 N 
D)  0.17 N 
E)  0.58 N

Question 9

A 2200 kg truck is decelerated from 22 m/s to 12 m/s in 3.2 s,as its driver sees a deer wander into the road.What was the magnitude of the net force that slowed the truck?

Accepted Answer

A)  8.3 kN 
B)  23.4 kN 
C)  6.9 kN 
D)  15.1 kN 
A)  8.3 kN 
B)  23.4 kN 
C)  6.9 kN 
D)  15.1 kN

A 5.00 kg ball is moving at 4.0 m/s to the right and a 6.00 kg ball is moving at 3.00 m/s to the left.The total momentum of the system is

A 100.0 kg mass is blown apart into a 95.00 kg piece and a 5.000 kg piece.After the blast,the two masses are moving apart with a relative velocity of 100.0 m/s.The kinetic energy of the 5.000 kg mass after the explosion is

If the kinetic energy of a ball is doubled,then the momentum is

Mass 30.0 g is located at the origin.Where is mass 10.0 g located if the coordinates of the center of mass are (0.00 cm,10.0 cm)?

A 1200 kg car is traveling at 3.00 m/s and strikes a wall.The 1200 kg car bounces off the wall with a velocity of 4.00 m/s.If the contact with the wall by the car lasts for 0.10 seconds,then the average force on the car is

A 100 kg mass is blown apart into a 50.0 kg piece and a 50.0 kg piece.After the blast,the two masses are moving apart with a relative velocity of 100 m/s.The total kinetic energy after the explosion is

An 1800 kg car traveling at 35.0 m/s strikes a wall.If the car comes to rest in 0.500 seconds,then the average force of the wall on the car is

A vertical spring is compressed and when released applies a force during a 0.25 s time interval to a 17 g frog,which is flung upward due to the applied force from the spring.If the frog attains a velocity of 11 m/s after being released from the spring,what average force was applied by the spring?

A 2200 kg truck is decelerated from 22 m/s to 12 m/s in 3.2 s,as its driver sees a deer wander into the road.What was the magnitude of the net force that slowed the truck?

Introduction

Force

Acceleration and Newtons Second Law of Motion

Motion With Constant Acceleration

Circular Motion

Conservation of Energy

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

Exam 7: Linear Momentum

A 5.00 kg ball is moving at 4.0 m/s to the right and a 6.00 kg ball is moving at 3.00 m/s to the left.The total momentum of the system is

A 100.0 kg mass is blown apart into a 95.00 kg piece and a 5.000 kg piece.After the blast,the two masses are moving apart with a relative velocity of 100.0 m/s.The kinetic energy of the 5.000 kg mass after the explosion is

If the kinetic energy of a ball is doubled,then the momentum is

Mass 30.0 g is located at the origin.Where is mass 10.0 g located if the coordinates of the center of mass are (0.00 cm,10.0 cm)?

A 1200 kg car is traveling at 3.00 m/s and strikes a wall.The 1200 kg car bounces off the wall with a velocity of 4.00 m/s.If the contact with the wall by the car lasts for 0.10 seconds,then the average force on the car is

A 100 kg mass is blown apart into a 50.0 kg piece and a 50.0 kg piece.After the blast,the two masses are moving apart with a relative velocity of 100 m/s.The total kinetic energy after the explosion is

An 1800 kg car traveling at 35.0 m/s strikes a wall.If the car comes to rest in 0.500 seconds,then the average force of the wall on the car is

A vertical spring is compressed and when released applies a force during a 0.25 s time interval to a 17 g frog,which is flung upward due to the applied force from the spring.If the frog attains a velocity of 11 m/s after being released from the spring,what average force was applied by the spring?

A 2200 kg truck is decelerated from 22 m/s to 12 m/s in 3.2 s,as its driver sees a deer wander into the road.What was the magnitude of the net force that slowed the truck?

Introduction

Force

Acceleration and Newtons Second Law of Motion

Motion With Constant Acceleration

Circular Motion

Conservation of Energy

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters