A-LevelPhysicsDynamics9702/12 · Oct/Nov 2018 · Q91 Mark
Two bodies travelling along the same straight line collide in a perfectly elastic collision. Which statement must be correct?
AThe initial speed of one body will be the same as the final speed of the other body.
BThe relative speed of approach between the two bodies equals their relative speed of separation.
CThe total momentum is conserved but the total kinetic energy will be reduced.
DOne of the bodies will be stationary at one instant.
✓ Correct answer
B: The relative speed of approach between the two bodies equals their relative speed of separation.
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Dynamics and see which topics are most likely to come up next.
Sign up free →