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Motion definitions
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Gravity
Terms in this set (17)
Scalar
Physical Quantity with magnitude only - no direction
Vector
Physical quantity with magnitude and direction
Displacement (s) / m
Distance in a specified direction
Speed
the rate of change of distance
Velocity (v)
the rate of change of displacement
Acceleration (a)
Rate of change of velocity
Upthrust
The apparent loss of weight of a body immersed in a fluid and equal to the weight of the fluid displaced
Friction
The resistance to motion between two surfaces that touch
Drag
Resistance of the air (technically a fluid) against the forward movement of an airplane.
Terminal velocity
The greatest velocity a falling object can achieve as weight and drag are balanced
Mass
A property of a body which resists change in motion.
Weight
The effect of gravitational field on a mass
Inertia/Inertial Mass
Resistance to change in motion of a body.
Thinking distance
is the distance a vehicle travels between the driver seeing a hazard and applying the brakes
Braking distance
is the distance a vehicle travels after the brakes are applied until the vehicle comes to a stop
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