Work and Power

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as the product of the force and the distance moved in that direction.

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) × Distance (d) × cos(θ), where θ is the angle between the force and the direction of motion.

Front

What is the unit of work?

Back

The unit of work is the Joule (J). One Joule is equal to one Newton meter.

Front

What is power in physics?

Back

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

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t).

Front

What is the unit of power?

Back

The unit of power is the Watt (W), where 1 Watt = 1 Joule/second.

Front

What does the Work-Energy Theorem state?

Back

The Work-Energy Theorem states that the net work done on an object is equal to the change in its kinetic energy.

Front

How does increasing work while decreasing time affect power?

Back

Increasing work while decreasing time results in more power, as power is directly proportional to work done over time.

Front

What is the relationship between force, distance, and work?

Back

Work is directly proportional to both the force applied and the distance moved in the direction of the force.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.