A 15-kg cart is rolling along the ground at 62 m/s. Ignore friction. But it is
raining, and the cart collects rain at the rate of 40 grams per second. The
collisions between the rain and the cart are inelastic, but momentum is
conserved.
a. How long does it take the cart to slow down to 50 m/s?
b. How much work did the rain do on the cart?
c. What is the power of the rain?
