A man stands on a tall ladder of height h. He leans over a little too far and falls off the ladder. If his mass is m, what is his kinetic energy right before he hits the ground?

A. 1 mgh

B. 1/2 mgh

C. 2 mgh

8) Energy Review: Ben Roethlisberger falls off the side of a building. If the building is 37.5 m high, how fast is he traveling right before he hits the ground?

A 20 kg object falls from a height of 30 meters. How many joules of kinetic energy will the object have just before it hits the ground?

A feather which has a mass of 3g is dropped from a height of 2 meters above the ground. When it reaches the ground, its speed is 1.2 m/s. Calculate the initial amount of gravitational potential energy of the feather, the kinetic energy of the feather right before it hits the ground, the amount of mechanical energy that was lost as the feather fell to the ground, and the average force of air resistance on the feather. Then, draw a diagram of the feather which includes the following information: the initial gravitational potential energy of the feather, the kinetic energy of the feather right before it hits the ground, and the amount of thermal energy acquired by the feather and the atmosphere.