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11th grade Momentum and impulse worksheet

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Momentum and impulse

Grade 11 Science Worksheet - Challenge Me

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Circle the best answer, or write your answer on the line.

  1. A 0.5 kg ball hits a wall at 4 m/s and bounces straight back at 4 m/s. The contact lasts 0.05 s. What is the average force on it, Ari?

  2. A 1.5 kg cart hits a spring bumper at 2 m/s and bounces straight back at 1 m/s. The contact lasts 0.1 s. What is the average force on it, Esme?

  4. In the momentum bar chart, what is the ball's change in momentum, Jun?

    • −4 kg·m/s
    • +4 kg·m/s
    • −2 kg·m/s
    • 0 kg·m/s, since the speed is the same

  5. In the momentum bar chart, how fast is the ball moving before and after the bounce, Kira?

    Use the picture in question 3.

    • 1 m/s both times
    • 2 m/s both times
    • 4 m/s both times
    • 4 m/s, then 0

  6. In the momentum bar chart, the bounce lasts 0.1 s. What is the average force on the ball, Luz?

    Use the picture in question 3.

    • 0.4 N
    • 20 N
    • 40 N
    • 0 N, since the speed didn't change

  7. Milo says the heavier of two carts always has more momentum. Agree or disagree?

    • Disagree: speed matters too
    • Agree: a longer stop means a bigger force
    • Agree: direction doesn't matter, so compare masses
    • Agree: momentum is just mass

  8. Noah says a ball that bounces back at the same speed had no change in momentum. Agree or disagree?

    • Disagree: its direction flipped
    • Agree: the speed didn't change
    • Agree: momentum depends just on speed
    • Agree: a soft wall makes the force bigger

  9. Pia says a foam bumper lowers the force on a cart because it makes the stop take longer. Agree or disagree?

    • Disagree: longer stops mean bigger forces
    • Disagree: the cart's mass alone matters
    • Agree: F = Δp ÷ Δt
    • Disagree: momentum has no direction, so foam can't help

  10. Ren wants a bumper that stops carts gently. Which design helps most?

    • A springy plate that bounces carts back
    • A thinner wooden block
    • Thick foam that squashes slowly
    • A hard steel plate

  11. A springy bumper bounces carts back instead of stopping them. What happens to the impulse it gives, Tala?

    • It gets smaller
    • It becomes zero
    • It gets bigger
    • It stays the same
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11th grade Momentum and impulse worksheet – printable
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About this worksheet

Momentum and impulse. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can find momentum, p = mv, in kg·m/s, and compare objects by m × v, not by mass or speed alone. Momentum has a direction.
  • I can find impulse as J = FΔt (the area under a force-time graph) and know that it equals Δp.
  • I can find the change in momentum for a stop and for a bounce, and the average force F = Δp ÷ Δt.
  • I can explain soft bumpers: the same Δp over a longer time needs less force. A bounce needs more impulse than a stop.

Standard: HS-PS2-2

Words to know

momentum: Mass × velocity: p = mv, in kg·m/s, with a direction

impulse: Force × time: J = FΔt, in N·s

change in momentum: Δp = momentum after − momentum before

average force: Δp ÷ Δt over the contact time

force-time graph: Force plotted against time; its area is the impulse

Common mistakes

Your child added mass and speed. Momentum is mass × velocity, in kg·m/s.

Your child divided force by time. Impulse is force × time, in N·s.

Your child counted only the stopping part of a bounce. Bouncing back needs a second change of momentum, so add both speeds.

Questions parents ask

What is the most common mistake with momentum and impulse?

Your child added mass and speed. Momentum is mass × velocity, in kg·m/s.

Are these 11th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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