Write the equation that links work done, time and power.
Workdone = power ÷ time
power = time ÷ work done
Power = work done ÷ time
Define power.
The rate at which work is done.
The strength of an object
The force that causes an object to be displaced
How many Watts are there in 70J/s?.
7W
70W
0.7W
Electric motor A lifts a mass of 50g 1m into the air in 5 seconds. Electric motor B lifts a mass of 50g 1m into the air in 6 seconds. Which electrical motor is more powerful