Work, Power, and Energy Flashcard

Front

What is the formula for calculating work?

Back

W = F × d, where W is work, F is force, and d is distance.

Front

What is the formula for calculating power?

Back

P = W/t, where P is power, W is work, and t is time.

Front

What is the unit of measurement for work and energy?

Back

Joules (J) is the unit of measurement for both work and energy.

Front

What is the relationship between work, energy, and power?

Back

Work is the transfer of energy, and power is the rate at which work is done.

Front

If a force of 50 N is applied over a distance of 150 m, how much work is done?

Back

W = F × d = 50 N × 150 m = 7500 J.

Front

How much power is exerted if 7500 J of work is done in 300 seconds?

Back

P = W/t = 7500 J / 300 s = 25 Watts.

Front

What does it mean when we say energy is conserved?

Back

Energy is never created or destroyed; it can only be transformed or transferred.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 mv².

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state, calculated as PE = mgh.

Front

What is the definition of power in physics?

Back

Power is the rate at which work is done or energy is transferred.