Bob swims 100 m in 50 s with constant speed in 59 m long swimming pool. This means that he finishes after 2 laps in the same point when he started. His AVERAGE SPEED during was a. 2m/s
b. 4m/s
c. 10m/s
d. 0m/s

Bob swims 100 m in 50 s with constant speed in 59 m long swimming pool. This means that he finishes after 2 laps in the same point when he started. His AVERAGE VELOCITY during was
a. -1m/s
b. 0m/s
c. 1m/s
d. 2m/s

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