NumicornNumicornLearn, solve, progress

Momentum Practice Tests

These Grade 11 Science practice tests examine linear momentum, impulse, momentum conservation, elastic and inelastic collisions, recoil, center of mass, force-time graphs, and experimental data.

Skills covered

  • Calculating vector momentum from mass and velocity and tracking direction with signs
  • Applying impulse–momentum relationships and interpreting force-time graph areas
  • Solving isolated collisions, perfectly inelastic collisions, elastic collisions, recoil, and center-of-mass motion
  • Distinguishing momentum conservation from kinetic-energy conservation and identifying external impulse
  • Planning momentum experiments, evaluating calibration, uncertainty, repeated trials, graphs, and system boundaries

How to use these practice tests

Choose the system and positive direction first. Write initial and final momentum as vectors, check whether external impulse is negligible, and compare the units and direction of the result.

For more Grade 11 Science practice, return to the Grade 11 Science category.

Select a test

5 Tests
1. Test2. Test3. Test4. Test5. Test

1. Test

Grade 11 Momentum Practice Tests

Practice Grade 11 Science questions about linear momentum, impulse, momentum conservation, collisions, recoil, force-time graphs, and experimental analysis.

Choose the best answer. Define the system, assign directions, use vector momentum, account for external impulse, and check units.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is linear momentum?

Please select an answer first.

Correct answer: A

The correct answer is p⃗=mv⃗\vec p=m\vec v.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Linear momentum equals mass times velocity and is a vector pointing in the direction of velocity.
  3. Check signs and units: The correct answer is p⃗=mv⃗\vec p=m\vec v.

Linear momentum equals mass times velocity and is a vector pointing in the direction of velocity.

2. QuestionMultiple choice

What is the impulse-momentum relationship?

Please select an answer first.

Correct answer: B

The correct answer is J⃗=Δp⃗\vec J=\Delta\vec p.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Impulse is the change in momentum and can also be written J⃗=F⃗avgΔt\vec J=\vec F_{avg}\Delta t.
  3. Check signs and units: The correct answer is J⃗=Δp⃗\vec J=\Delta\vec p.

Impulse is the change in momentum and can also be written J⃗=F⃗avgΔt\vec J=\vec F_{avg}\Delta t.

3. QuestionMultiple choice

What is the SI unit of momentum?

Please select an answer first.

Correct answer: C

The correct answer is kg⋅m/s\text{kg}\cdot\text{m/s}.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Momentum has units of mass times velocity: kilograms meter per second.
  3. Check signs and units: The correct answer is kg⋅m/s\text{kg}\cdot\text{m/s}.

Momentum has units of mass times velocity: kilograms meter per second.

4. QuestionMultiple choice

What happens to momentum if velocity reverses while mass stays constant?

Please select an answer first.

Correct answer: D

The correct answer is The momentum reverses direction.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Momentum is a vector, so reversing velocity reverses momentum direction while preserving magnitude if speed is unchanged.
  3. Check signs and units: The correct answer is The momentum reverses direction.

Momentum is a vector, so reversing velocity reverses momentum direction while preserving magnitude if speed is unchanged.

5. QuestionMultiple choice

A 2 kg object moves at 3 m/s east. What is its momentum?

Please select an answer first.

Correct answer: A

The correct answer is 6 kg⋅m/s6\,\text{kg}\cdot\text{m/s} east.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Using p=mvp=mv, p=(2)(3)=6 kg⋅m/sp=(2)(3)=6\,\text{kg}\cdot\text{m/s} east.
  3. Check signs and units: The correct answer is 6 kg⋅m/s6\,\text{kg}\cdot\text{m/s} east.

Using p=mvp=mv, p=(2)(3)=6 kg⋅m/sp=(2)(3)=6\,\text{kg}\cdot\text{m/s} east.

6. QuestionMultiple choice

How can the same impulse be delivered with a smaller average force?

Please select an answer first.

Correct answer: B

The correct answer is Increase the time over which the force acts.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Since J=FavgΔtJ=F_{avg}\Delta t, a fixed impulse requires less average force when contact time is longer.
  3. Check signs and units: The correct answer is Increase the time over which the force acts.

Since J=FavgΔtJ=F_{avg}\Delta t, a fixed impulse requires less average force when contact time is longer.

7. QuestionMultiple choice

What is an external impulse on a system?

Please select an answer first.

Correct answer: C

The correct answer is Impulse from a force exerted by something outside the chosen system.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: External impulse changes the total momentum of the selected system.
  3. Check signs and units: The correct answer is Impulse from a force exerted by something outside the chosen system.

External impulse changes the total momentum of the selected system.

8. QuestionMultiple choice

What is the total momentum of an isolated system?

Please select an answer first.

Correct answer: D

The correct answer is It remains constant.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: If net external impulse is zero, total system momentum is conserved.
  3. Check signs and units: The correct answer is It remains constant.

If net external impulse is zero, total system momentum is conserved.

9. QuestionMultiple choice

Why does a padded dashboard reduce injury in a collision?

Please select an answer first.

Correct answer: A

The correct answer is It increases stopping time and reduces average force for the same momentum change.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: For a given Δp\Delta p, increasing Δt\Delta t reduces Favg=Δp/ΔtF_{avg}=\Delta p/\Delta t.
  3. Check signs and units: The correct answer is It increases stopping time and reduces average force for the same momentum change.

For a given Δp\Delta p, increasing Δt\Delta t reduces Favg=Δp/ΔtF_{avg}=\Delta p/\Delta t.

10. QuestionMultiple choice

What does a change in momentum depend on?

Please select an answer first.

Correct answer: B

The correct answer is The initial and final momentum vectors.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Momentum change is Δp⃗=p⃗f−p⃗i\Delta\vec p=\vec p_f-\vec p_i, so both magnitude and direction matter.
  3. Check signs and units: The correct answer is The initial and final momentum vectors.

Momentum change is Δp⃗=p⃗f−p⃗i\Delta\vec p=\vec p_f-\vec p_i, so both magnitude and direction matter.

Previous testNext test