A-LevelPhysicsDynamics9702/12 · Feb/Mar 2019 · Q101 Mark
Two balls, of masses m and 2m, travelling in a vacuum with initial velocities 2v and v respectively, collide with each other head-on, as shown. [Figure 10.1] After the collision, the ball of mass m rebounds to the left with velocity v. What is the loss of kinetic energy in the collision?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A½ mv²
B¾ mv²
Cmv²
D²⁄₃ mv²
✓ Correct answer
C: mv²
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