Physics · Unit 2 · Linear motion and force · Linear motion
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The diagram shows two trolleys on a frictionless track before and after a collision. Which statement correctly describes the principle of conservation of momentum demonstrated in this collision?
In an isolated system, two ice-skaters initially at rest push off from each other. Skater A (mass 45 kg) moves to the left at 2.0 m/s. Which statement correctly describes what happens to the momentum of skater B (mass 60 kg)?
A 1,200 kg car travelling at 15 m s⁻¹ collides with a stationary 800 kg car on a frictionless surface. After the collision, both cars move together as a single unit. Which statement best describes the principle demonstrated by this scenario?