Work, Power, and Energy

Front

What is the relationship between power and time when moving an object?

Back

If the amount of time taken to move an object decreases, the power increases.

Front

Does the amount of work done change if the time taken to move an object changes?

Back

No, the amount of work stays the same regardless of the time taken.

Front

What type of energy is represented by a rock perched on a cliff?

Back

Gravitational energy.

Front

What term describes the work done by a machine?

Back

Work out.

Front

If a ramp has an efficiency of 86.7% and does 65 J of work, how much work have you done?

Back

74.97 J.

Front

Define work in the context of physics.

Back

Work is defined as the product of force and the distance over which it acts, in the direction of the force.

Front

What is the formula for calculating power?

Back

Power = Work / Time.

Front

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

Back

Watt (W).

Front

How does increasing the force applied to an object affect the work done?

Back

Increasing the force increases the work done, assuming the distance remains constant.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in an object.