Conservation of momentum in collisions
Grade 11 Science Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
East is positive. Two carts at rest are pushed apart by a spring. The 1 kg cart moves at 6 m/s. What is the 3 kg cart's velocity, Bo?
East is positive. Two carts at rest are pushed apart by a spring. The 5 kg cart moves at 1.2 m/s. What is the 2 kg cart's velocity, Esme?
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Cart collision trials (example data)
trial total momentum before (kg·m/s) total momentum after (kg·m/s) track 1 6 6 smooth 2 4 4 smooth 3 6 4.5 rough rug In the collision trials table, which trial did not conserve momentum, Jun?
- Each of the three did
- Trial 1
- Trial 2
- Trial 3
In the collision trials table, why did trial 3 lose momentum, Kira?
- Momentum isn't conserved in collisions
- The carts' pushes on each other used it up
- The carts stuck together
- Rug friction was an outside force
In the collision trials table, how much momentum did trial 3 lose, Luz?
- 6 kg·m/s
- 10.5 kg·m/s
- 4.5 kg·m/s
- 1.5 kg·m/s
Milo says momentum is lost when two carts stick together. Agree or disagree?
- Agree: directions don't count
- Disagree: the total momentum stays the same
- Agree: each cart keeps its speed instead
- Agree: sticking destroys momentum
Pia says a 2 kg cart at 3 m/s east and a 3 kg cart at 2 m/s west have a total momentum of 0. Agree or disagree?
- Agree: 6 + (−6) = 0
- Disagree: the total is 12
- Disagree: the faster cart wins
- Disagree: sticking would change it
A 3 kg cart at 4 m/s hits a 1.5 kg cart at rest. The 3 kg cart slows to 1 m/s. What is the 1.5 kg cart's speed after, Ren?
- 8 m/s
- 6 m/s
- 4 m/s
- 2 m/s
A 2 kg cart at 5 m/s hits a 3 kg cart at rest and they stick. How fast do they move together, Tala?
- 2 m/s
- 3.3 m/s
- 2.5 m/s
- 5 m/s
From rest, a spring pushes a 1 kg cart east at 2 m/s and a 4 kg cart the other way. What is the 4 kg cart's velocity, Zee?
- −2 m/s
- −0.5 m/s
- +0.5 m/s
- −8 m/s