An owl has a mass of 4 kg. It dives to catch a mouse, losing 800 J of its GPE. What was the starting height of the owl, in meters?

A basketball player who is 2.00 m tall is standing on the floor L = 8.00 m from the basket, as in Figure P4.54. If he shoots the ball at a 33.0° angle with the horizontal, at what initial speed must he throw so that it goes through the hoop without striking the backboard? The basket height is 3.05 m. Hints: The ending height is not the same as the starting height, so you cannot use the range or time of flight formulas.

A ball is starting at a height equal to 5 ft and a verticalvelocity of 20 mph. The ball is in the earth's gravitational field.Neglect friction. Solve for the position vs time. When will theball have a zero velocity? When will it hit the ground?(Be careful ofunits!)