You do work when you shovel your driveway. If you use a snow blower, is the work done more, less or the same? Explain.

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

If steel is more dense that lake water, why can a boat float

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?