H2P-353
Relative speed in elastic collisions
H2 Physics · JC 2 · Hard · Relative speed in elastic collisions
A 0.60 kg trolley moving at 1.8 m s⁻¹ collides elastically in a straight line with a stationary 0.30 kg trolley. Using conservation of momentum and the fact that relative speed of approach equals relative speed of separation, calculate the speed of the 0.30 kg trolley immediately after the collision.
- 2.4 m s⁻¹
- 1.2 m s⁻¹
- 0.60 m s⁻¹
- 3.6 m s⁻¹
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