- A cart X of mass 3.0 kg moving at 6.0 m s⁻¹ collides with a stationary cart Y of mass 6.0 kg. A spring is attached to X as shown.
cart X and Y with spring attached to X
The graph shows the velocities of X and Y before, during and after the collision.
The collision lasted for 40 ms.
(a) Show that the collision is elastic. [2]
(b) Determine
(i) the magnitude of the average force exerted on Y, [2]
(ii) the average power delivered to Y, [2]
(iii) the elastic energy stored in the spring at t = 30 ms. [2]