Module 4 Test

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How do you calculate work done?

Back

Work done is calculated using the formula: Work = Force x Distance (W = F * d). It is measured in joules (J).

Front

What is the unit of energy?

Back

The unit of energy is the joule (J).

Front

What is kinetic energy?

Back

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

Front

At which point is kinetic energy greatest in a swinging motion?

Back

Kinetic energy is greatest at the lowest point of the swing due to maximum speed.

Front

What happens to gravitational potential energy when an object is lifted higher?

Back

When an object is lifted higher, its gravitational potential energy increases because it has more height (h) in the PE = mgh formula.

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.

Front

What is power?

Back

Power is the rate at which work is done or energy is transferred, measured in watts (W).

Front

How do you convert joules to watts?

Back

To convert joules to watts, divide the energy in joules by the time in seconds: Power (W) = Energy (J) / Time (s).

Front

What is the formula for calculating gravitational potential energy?

Back

The formula for gravitational potential energy is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.