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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.

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5. 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 the independent variable in an experiment testing impulse by changing collision time?

Please select an answer first.

Correct answer: A

The correct answer is Collision time.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: The deliberately changed quantity is collision time; impulse or momentum change is measured as the response.
  3. Check signs and units: The correct answer is Collision time.

The deliberately changed quantity is collision time; impulse or momentum change is measured as the response.

2. QuestionMultiple choice

What does a slope of impulse versus average force represent?

Please select an answer first.

Correct answer: B

The correct answer is The interaction time.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: From J=FavgΔtJ=F_{avg}\Delta t, a graph of impulse versus force has slope Δt\Delta t when time is fixed for the trial.
  3. Check signs and units: The correct answer is The interaction time.

From J=FavgΔtJ=F_{avg}\Delta t, a graph of impulse versus force has slope Δt\Delta t when time is fixed for the trial.

3. QuestionMultiple choice

What does the area under a force-time graph tell a student about a collision?

Please select an answer first.

Correct answer: C

The correct answer is The momentum change produced by the force.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: The area is impulse, which equals the vector change in momentum.
  3. Check signs and units: The correct answer is The momentum change produced by the force.

The area is impulse, which equals the vector change in momentum.

4. QuestionMultiple choice

Why should collision sensors be calibrated before collecting data?

Please select an answer first.

Correct answer: D

The correct answer is Calibration helps ensure measured force and time correspond to actual values.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: A calibration error can bias the force-time area and therefore the calculated impulse.
  3. Check signs and units: The correct answer is Calibration helps ensure measured force and time correspond to actual values.

A calibration error can bias the force-time area and therefore the calculated impulse.

5. QuestionMultiple choice

What is a random error in a momentum experiment?

Please select an answer first.

Correct answer: A

The correct answer is Trial-to-trial variation that changes unpredictably.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Random error produces scatter and can often be estimated or reduced through repeated trials.
  3. Check signs and units: The correct answer is Trial-to-trial variation that changes unpredictably.

Random error produces scatter and can often be estimated or reduced through repeated trials.

6. QuestionMultiple choice

Why should a student include uncertainty when comparing measured and predicted momentum?

Please select an answer first.

Correct answer: B

The correct answer is The measurements and model quantities have finite precision.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Agreement should be judged relative to measurement uncertainty rather than by exact equality alone.
  3. Check signs and units: The correct answer is The measurements and model quantities have finite precision.

Agreement should be judged relative to measurement uncertainty rather than by exact equality alone.

7. QuestionMultiple choice

What does a momentum-versus-time graph with constant slope indicate?

Please select an answer first.

Correct answer: C

The correct answer is A constant net force.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: The slope Δp/Δt\Delta p/\Delta t is net force, so constant slope indicates constant net force.
  3. Check signs and units: The correct answer is A constant net force.

The slope Δp/Δt\Delta p/\Delta t is net force, so constant slope indicates constant net force.

8. QuestionMultiple choice

What should a student do if measured total momentum is not exactly conserved?

Please select an answer first.

Correct answer: D

The correct answer is Check external impulse, measurement uncertainty, calibration, and system boundaries.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Small differences can arise from external forces or measurement limitations and should be investigated systematically.
  3. Check signs and units: The correct answer is Check external impulse, measurement uncertainty, calibration, and system boundaries.

Small differences can arise from external forces or measurement limitations and should be investigated systematically.

9. QuestionMultiple choice

What is a valid conclusion from repeated collision trials?

Please select an answer first.

Correct answer: A

The correct answer is A conclusion supported by the trend and uncertainty of the collected momentum data.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Evidence-based conclusions should use all relevant trials, signs, trends, uncertainty, and model limits.
  3. Check signs and units: The correct answer is A conclusion supported by the trend and uncertainty of the collected momentum data.

Evidence-based conclusions should use all relevant trials, signs, trends, uncertainty, and model limits.

10. QuestionMultiple choice

Which equation is most appropriate when the external impulse is negligible?

Please select an answer first.

Correct answer: B

The correct answer is p⃗initial=p⃗final\vec p_{initial}=\vec p_{final}.

  1. Identify the momentum system: Determine the objects, directions, initial and final velocities, and whether external impulse is negligible.
  2. Apply the momentum relationship: Negligible external impulse gives conservation of total system momentum, regardless of whether kinetic energy is conserved.
  3. Check signs and units: The correct answer is p⃗initial=p⃗final\vec p_{initial}=\vec p_{final}.

Negligible external impulse gives conservation of total system momentum, regardless of whether kinetic energy is conserved.

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