Answer to Question #183456 in Physics for kat

Question

A small catapult is used to launch 1.5 kg water balloons straight up into the air. A clever student is able to measure the speed of the water balloon while it is rising up into the air. She finds that when the water balloon is 8.0 m above the catapult it is moving at a speed of 20.0 m/s. (For the purposes of this question, assume that the catapult is positioned in a small hole so that the height of the catapult is level with the ground.)

a) What is the total energy of the water balloon at a height of 8.0 m?

b) What is the maximum height that the water balloon will reach?

c) With what speed with the water balloon hit the ground?

d) If the catapult was 75% efficient, how much energy was stored in the catapult before the water balloon was launched?

e) What happened to the 25% of the energy that was not transferred to the water balloon?

Thank You in advanced!

Answer 1

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