You will need to find the average distance and enter it in the 1st data table. Again, hold the bob 30 cm above the floor. Place the wooden block on top of 1 or 2 books so that the bob will still hit the block. Release the bob from the 30-cm height and let it hit the block. Repeat the experiment three times and find the average as before.
Kinetic energy is energy of motion and potential energy is stored energy.
Explain how you know. Explain how you know.