While riding his bike, Riley was able to travel 10 km from his house. He began his journey at the end of his driveway and rode
up a hill for 3 blocks before making a right-hand turn. He
continued for 4.8 km before turning around and returning
home. The entire trip took Riley 25 minutes. Which of the
following correctly describes the average speed of his bike ride?

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