# Online Quiz On Momentum

10 Questions | Total Attempts: 918  Settings  Dear student, Type your name and last name in the gaps below. This quiz is based on chapter 7 of your workbook and on your comprehension in class. Scientific calculators are permitted. You will have 25 minute to complete the quiz. As finishing the quiz, automatically your perfomance report will show up on the screen. Then, click on "print report" and turn in the results to your teacher. Wait until the teacher gives you permission before clicking on " Start" to begin your assessment. Best of luck! ; )

• 1.
Momentum means or is most associated with:
• A.

Inertia

• B.

Newton's second Law

• C.

Inertia in Motion

• D.

Impulse

• 2.
What could be the momentum of a 1,300-kg car that moves at 4 m/s?
• A.

5,200 N

• B.

5,200 kg.m/s

• C.

52 kg.m/s

• D.

52 N

• 3.
Will a large truck always have more momentum than a roller skate?
• A.

No, a large truck at rest has no momentum. A moving roller skate has momentum.

• B.

Yes, a large truck has greater mass than a a roller skate.

• 4.
Why is falling on a floor with more give less dangerous than falling on a floor with less give?
• A.

Because the floor with more give allows a greater time for the impulse that reduces the momentum of fall to zero. A greater time for a change in momentum results in less force.

• B.

Because falling on a floor with more give causes less impact.

• C.

Because falling on a floor with more give includes greater momentum.

• D.

Because falling on a floor with less give comprises shorter time.

• 5.
Read the following statement :"If no net force or net impulse acts on a system, the momentum of that system cannot change." What does it refer to?
• A.

Law of Impulse

• B.

Newton's 3rd Law

• C.

Law of Momentum

• D.

Law of Conservation of Momentum

• 6.
Newton's second law states that of no net force is exerted on a system, no acceleration occurs. Does it follow that no change in momentum occurs?
• A.

No, other variables can lead to the change in speed other than acceleration.

• B.

Yes, because no acceleration means that no change occurs in velocity or in momentum.

• 7.
A blue billiard ball is moving at speed "v" towards a red ball of the same mass standing still. Assuming it is an elastic collision, after hitting the red ball, the blue one:
• A.

Bounces back.

• B.

Stops.

• C.

Moves along with the red ball at half "v".

• D.

Moves along with the red ball at "v".

• 8.
What impulse occurs when an average force of 15 N is exerted on a cart for 3.0 s?
• A.

55 N.s

• B.

50 N.s

• C.

45 N.s

• D.

40 N.s

• 9.
Based on the problem above, if the mass of the cart is 5 kg and the cart is initially at rest, its final speed is equivalent to:
• A.

9 m/s

• B.

15 m/s

• C.

20 m/s

• D.

10 m/s

• 10.
What is the average force that a gun exerts on a bullet shot with an impulse of 14,000 N.s? Assume it took 0.4 s for the bullet to leave the barrel.
• A.

5,600 N

• B.

35,000N

• C.

30,000 N

• D.

56,000N

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