If a riding lawnmower engine exerts 19hp in one minute to move the mower, how much work is done?

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.