PLEASE HELP! A 7.0 kilogram ball traveling east 5.0 meters per second collided head on with a 3.0- kilogram ball traveling west at 6.0 meters per second. After the collision, the 7.0 kilogram ball bounces off the other and travels west at 2 m/s. Determine the final velocity of the 3.0 kilogram ball.

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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