To test steel balls (mass = 2 kg), they are dropped onto an inclined plane (Figure 4) from a height of 2 m. Determine:

a) the velocity of the balls before impact;

b) the components (vx, vy) of the velocity of the balls after impact;

c) the height a where the template should be placed if we only want to retain the balls with a coefficient of restitution greater than 92%.

O 2 m a 100 1 m Figure 4