Science

Calculating Work and Power

Question no. 1

Joaquin helps his father put the 300 Newton cutter in the back of his father's truck. They lift the cutter from the ground to the bed, which is 2.8 meters above the ground. How much work do Joaquin and his father do?

Question no. 2

John runs for 2 minutes (120 seconds) on the treadmill and burns 60 Joules of energy. What was his average power output in Watts?

Question no. 3

If a force of 20N is applied to an object and it moves a distance of 8m, what is the work done?

Question no. 4

Calculate the power if a machine does 500J of work in 10 seconds.

Question no. 5

Calculate the power if a light bulb uses 60J of energy in 2 seconds.