Rather than run in the school marathon, then decided to run with his brother and his new car. they drove to north from pinehills to silverlight covering a distance of 240 km in four hours. on the way, i stop for a traffic light. when the light change to green, the car started from 0 m/s (stop) in which the speed of 100 m/s in ten seconds at what average speed did dan drive from pine hills to silver lake?

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