Force
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1
Force
Anything which can cause an object to change its motion, direction or shape
2
Weight
The force with which an object is pulled towards the Earth by gravity
3
Friction
force that opposes the sliding motion between two surfaces
4
Lubricant
A substance that reduces friction
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Calculating weight
weight (N) = mass (kg) x gravity
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Balanced forces
Cause an object to remain stationary or continue at a constant velocity
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Unbalanced forces
Cause an object to accelerate or decelerate
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Instrument used to measure force
Newton meter
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Unit of force
Newton
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Hooke's Law
The extension of a spring is directly proportional to the applied force
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