# When a superball rolls out the window...

From the top floor of a very high building, a kid drops a ball. Estimate the magnitude of the acceleration of the ball right after its collision with the ground in $$m/s^2$$.

Details and assumptions

• Assume that the collision is perfectly elastic.
• The acceleration due to gravity is $$-9.8~m/s^2$$.
• Do NOT neglect the effects of air resistance.
×