Answer:
The rate at which energy is transferred is called power and the amount of energy that is usefully transferred is called efficiency.
Answer: B, increase the rate at which he turns the crank
Explanation: i got it right
Answer:
15,00kg
Explanation:
here's your solution
=> force = 45,000N
=> acceleration = 30m/s^2
=> mass = ?
=> Mass = force/acceleration
=> mass = 45,000/30
=> mass = 15,00kg
hope it helps
