Sheila lifts a plant in 10 seconds to a height of 2m. She uses a force of 75N.How much power is used
Power is the rate at which work is done. The formula for power is:
Power = Work / time
To find the power used by Sheila, we need to first calculate the work done in lifting the plant. The work done is given by:
Work = Force x Distance
The force used by Sheila is 75N and the distance the plant is lifted is 2m. Thus, the work done is:
Work = 75N x 2m = 150 Joules
The time taken by Sheila to lift the plant is given as 10 seconds. Thus, the power used by Sheila can be calculated as:
Power = Work / time
Power = 150 Joules / 10 seconds = 15 Watts
Therefore, Sheila used 15 Watts of power to lift the plant.