AS-LEVEL: Momentum QP (PMT AQA pre2016)

Question 1

A body falls freely, with negligible air resistance. What quantity of the body is its rate of change of momentum? (1)

A) mass
B) power
C) kinetic energy
D) weight

Answer 1

D) weight

Question 2

A firework rocket is fired vertically into the air and explodes at its highest point. What are the changes to the total kinetic energy of the rocket and the total momentum of the rocket as a result of the explosion? (1)

Total kinetic Energy of the rocket ; Total Momentum of rocket

A) unchanged ; unchanged

B) unchanged ; increased

C) increased ; unchanged

D) increased ; increased

Answer 2

C