1. A ping-pong ball (mass m) and a bowling ball (mass 100m) are traveling at the same speed. Which of the following statements is true about their kinetic energy?
a. The ping-pong ball has a larger kinetic energy.
b. The bowling ball has a greater kinetic energy.
C. Their kinetic energies are equal.
d. Impossible to determine without knowing the speed they are both travelling at.

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j