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Question	Answer
Action force	The force exerted by one object or another, which is matched by a reaction force that the second object exerts on the first object
Reaction force	The force exerted by one object on another in response to an action force that the second object exerts on the first object
Resultant force	The overall force resulting from a combination of separate forces
Accelerates	The rate of change of velocity over time; measured in m/s squared
Gradient	The slope of a graph showing the relationship between between the two variables
Deceleration	Negative acceleration, that is, the rate of change of velocity over time; measured in m/s squared, when the object is slowing down
Stopping distance	Thinking distance + braking distance
Thinking distance	The time it takes for a driver to recognise a hazard and apply the brakes
Braking distance	The distance taken to stop from the moment braking begins
Turbulence	Rough flow
Terminal velocity	The velocity at which the air resistance on a falling object exactly balances the force of gravity so that the resultant force is zero and no further acceleration occurs

Resource summary

	Created by ryangriscti about 11 years ago