Fall ACP Review - Work, Power, Energy

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 in the International System of Units (SI)?

Back

The unit of work is the Joule (J).

Front

How is power defined in physics?

Back

Power is the rate at which work is done or energy is transferred, calculated as Power (P) = Work (W) / Time (t).

Front

What is the unit of power in the International System of Units (SI)?

Back

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

Front

What is kinetic energy and how is it calculated?

Back

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

Front

What is potential energy and how is it calculated?

Back

Potential energy (PE) is the energy stored in an object due to its position or configuration, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in its energy. If work is done on an object, its energy increases; if work is done by the object, its energy decreases.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

How does the angle of force application affect work done?

Back

If the force is applied in the same direction as the motion (θ = 0°), maximum work is done. If the force is perpendicular to the motion (θ = 90°), no work is done.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the potential energy an object has due to its height above the ground, calculated as PE = mgh.