The quantity work divided by time is called

The quantity work divided by time is called

• A. Power
• B. Work
• C. Force
• D. Momentum

Answer: (A)

Power is the rate at which work is done. When you divide the amount of work by the time it takes, you measure how quickly energy is transferred. The formula is P = W / t, and the unit is the watt (joules per second). If you do more work in less time, power is higher, like lifting a load quickly vs slowly. Work, by itself, is the total energy transferred, not how fast that transfer happens. Force is what causes changes in motion, but it doesn’t specify the rate of energy transfer. Momentum relates to motion (mass times velocity) and not to the rate of doing work.

Power is the rate at which work is done. When you divide the amount of work by the time it takes, you measure how quickly energy is transferred. The formula is P = W / t, and the unit is the watt (joules per second). If you do more work in less time, power is higher, like lifting a load quickly vs slowly.

Work, by itself, is the total energy transferred, not how fast that transfer happens. Force is what causes changes in motion, but it doesn’t specify the rate of energy transfer. Momentum relates to motion (mass times velocity) and not to the rate of doing work.