What is gravity?

Gravity is an invisible force that pulls objects towards each other.

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What is gravitational potential energy?

An object's gravitational potential energy is the energy it has due to its height in a gravitational field.

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What is weight?

An object's weight is the force acting on that object due to gravity.

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What is gravitational field strength?

Gravitational field strength is the strength of a gravitational field around an object.

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What is the formula for weight?

Weight (W) = Mass (m) x Gravitational field strength (g)


W = mg

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What are the units of weight?

Newtons (N)

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What is the formula for gravitational potential energy?

Gravitational potential energy (GPE) = Mass (m) x Gravitational field strength (g) x Height (h)


GPE = mgh

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Which two factors affect the strength of gravitational attraction between two objects?

1The masses of the objects.


2The distance between them.

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