A 2 kg hockey puck is pushed with a force of 30 N on a frictionless icy surface to get the puck moving. If the puck is now traveling with a velocity
of 15 m/s how much (if any) force will it take to keep it at this constant
speed if the surface has no friction? (SP2A1)

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

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