1) A loaded cart with a mass of 96 kg sits at reat atop a 40 degree inclined plane that measures 20.5m long. accidentally the cart starts so to roll down the inclined plane with a frictional force of 5550N working against it for the intire 20.5m. deteremine the speed at the bottom og the incline plane.
2) A 1,420 kg boulder at rest, begins to roll down a 52 m long hillside. while rolling, the ground causes a frictional force of 12,040N. the boulder arrives at the bottom of the hillside with a speed of 19.5m/s. determine the boulder's original height.
3) A 2,420 kg car starts from rest at the top of a 7.2m long driveway sloped at a 25 degree angle to the horizon. if a fractional force of 4,200N retards the motion, find the speed of the cat at the bottom of the driveway.