A 3 kg object is thrown from the top of a 80 meter cliff so that it is given 500 J of kinetic energy. After it has fallen a distance of 20 meters, how much kinetic energy does the object have?

armer john needs to get 3 identical pumpkin into the second level of his storehouse. For the first pumpkin he uses the elevator which takes only 4 seconds. All of the sudden the elevator no longer works. For the second pumpkin he carries the pumpkin up a set of stairs in 8 seconds. Unfortunately he is not able to use the stairs for the third pumpkin due to a weak set of steps. So for the third pumpkin he climbs up a ladder. It takes him 12 seconds to move the third pumpkin up the ladder.
Compare the work done for each pumpkin and compare his power for the three scenarios

what is the kinetic energy of a car with mass of 2000 kg moving at a 30 m/s ?

Kinetic energy = 900 kj (kilojoules)

250 Wh (watt hours)

0.25 kWh (kilowatt hours)

A 3 kg object is thrown from the top of a 80 meter cliff so that it is given 500 J of kinetic energy. After it has fallen a distance of 20 meters, how much kinetic energy does the object have?

armer john needs to get 3 identical pumpkin into the second level of his storehouse. For the first pumpkin he uses the elevator which takes only 4 seconds. All of the sudden the elevator no longer works. For the second pumpkin he carries the pumpkin up a set of stairs in 8 seconds. Unfortunately he is not able to use the stairs for the third pumpkin due to a weak set of steps. So for the third pumpkin he climbs up a ladder. It takes him 12 seconds to move the third pumpkin up the ladder.

Compare the work done for each pumpkin and compare his power for the three scenarios