Find the velocity of a 10 kg ball if it has 400 Joules of kinetic energy

At a circus a performer weighing 90kg is shot from a cannon vertically into the air at 45 m/s. To avoid killing the performer a bar must be hung so that they can grab it at the highest point of their launch. Where should the bar be placed? (Solve using conservation of energy)

]] The figure below represents: Ankle v D HARTAME M *********** Knee v hoit LE the work-energy theorem figure questions/6915149 Ankle h O muscle forces applied to the leg during running O a free-body diagram of the leg while a person is rising from a seated position O the impulse-momentum analysis applied to a runner's leg #1 Knee h Leg mg hp

A 0.500 kg bullet is fired from a gun at 25.0 m/s, how much kinetic energy does it have? 156.3 156.25 J 156 J 156.3 m

Question 9 What is the kinetic energy of a 1500 pound car travelling at 40 meters per second? « Previous No new data to save.

A roller coaster car is initially at rest at the top of the track, 10 meters above the ground. The car is released and moves down the track. Calculate the velocity of the car when it is 2 meters above the ground. Use the conservation of mechanical energy.