Pupil sheet · Momentum and collisions
Momentum and collisions — return questions
Name ______________________ Date ____________
Use one to two weeks after the lessons. Keep the notes and the lesson closed.
1. define / calculate / state
A railway truck rolls at 2.4 m/s. Its momentum is 7200 kg m/s. (a) Define momentum. (b) Calculate the mass of the truck. (c) The truck hits a second truck of mass 1800 kg at rest, and they couple together. Calculate the velocity of the coupled trucks. (d) State the condition for the total momentum to stay the same in the collision.
(a) Definition
(b) Mass of the truck
(c) Velocity after
(d) Condition
2. define / calculate
A pool player hits a 0.17 kg ball that is at rest with a cue. The cue is in contact with the ball for 4.0 ms, and the ball leaves at 2.0 m/s. (a) Define impulse. (b) Calculate the impulse on the ball. (c) Define resultant force in terms of momentum. (d) Calculate the average force of the cue on the ball.
(a) Definition of impulse
(b) Impulse
(c) Definition of resultant force
(d) Average force