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Weight

W = m g

W = weight (newtons)
m = mass (kg)
g = gravitational field strengthOn the Earth's surface the gravitational field strength g is 9.81ms-2Fun fact: The actual gravitational field strength varies between roughly 9.78ms-2 at the equator and 9.83 ms-2 at the poles due to Earth's rotation and non-uniform shape.

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Specification: AQA Physics (7407), AS-level, 3.4.1.5 Newton's laws of motion. Topic: Newtons Laws of Motion.

Key terms in this lesson

Momentum
The product of an object's mass and its velocity; a vector quantity, conserved in any interaction provided no external resultant force acts.

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