Question

(1.) A 0.5 kg basketball rolls off the roof of a building. At a moment when it is 3 m above the ground, it has a speed of 2.5 m/s. What is the total mechanical energy of the basketball ?

(2.) In the previous problem, how much kinetic energy does the football possess just after the throw? Assume that the football started from rest.

Answer 1

I believe the answer is c

Answer 2

The answer is C.

Step-by-step explanation:

Since the total mechanical energy is conserved, kinetic energy (and thus, speed) will be greatest when the potential energy is smallest.