Physics (Mechanics)

Definaition for ocr a Physics as

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  • Created by: Lewis
  • Created on: 13-11-11 19:38


The rate of change of an objects velocity.

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Breaking distance

The distance travelled by a vehicle from the moment when brakes are applied untill the vehicle comes to a stop.

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Centre of gravity

The point where the entire weight of an object appears to act.

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The mass per unit volume of material.

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The distance moved by an object in a particular direction (measured from a fixed starting point).

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Useful output energy/ total input energy x 100

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The net forces acting on the object are equal to zero.

The torque of the object is equal to zero.

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The force that will give a 1KG mass an acceleration of 1 ms^-2.

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The moment of a force about a point is the magnitude of the force, multiplied by the perpendicular distance of the point from the line of the force.

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The rate at which energy is transferred or the rate at which work is done.

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The force acting normally per unit area of surface. p=F/A

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Stopping distance

The sum of the braking distance and the thinking distance.

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