OnRamps Work Energy Power

Front

What does the work–energy theorem state?

Back

The change in the kinetic energy of an object is equal to the work done on it.

Front

When is work done by a force?

Back

Work is done only if the object moves in the direction of the force.

Front

How do you calculate the force applied to an object?

Back

Force can be calculated using the formula: F = (mass * final velocity^2) / (2 * distance).

Front

What is the relationship between force and displacement for work to be done?

Back

A force does work on an object if a portion of the force is parallel to the displacement of the object.

Front

How does velocity affect kinetic energy?

Back

When velocity triples, kinetic energy increases by 9 times.

Front

Define work in physics.

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied in the direction of the force.

Front

What is the formula for calculating work?

Back

Work (W) = Force (F) x Displacement (d) x cos(θ), where θ is the angle between the force and displacement.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv^2.

Front

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

Back

The unit of work is the Joule (J).

Front

What is power in the context of work and energy?

Back

Power is the rate at which work is done, calculated as Power = Work / Time.