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linear motion
the movement of a body in a straight or curved line, all parts move the same distance at the same time
what are the 2 forces of a free body diagram
weight, air resistance
what does linear motion relate to
Newton’s first law of inertia
what does Newtons first law of inertia state
a body will continue in its state of rest or uniform velocity unless external forces are exerted upon it
distance
the total length covered from the start point to the finish point
how to calculate distance
distance = speed x time (m)
displacement
the shortest straight line route from start to finish point
how to calculate displacement
displacement = velocity x time (m)
speed
the rate of change in distance
how to calculate speed
speed = distance / time (m/s)
velocity
the rate of change of displacement
how to calculate velocity
velocity = displacement / time (m/s)
acceleration / deceleration
the positive or negative change in velocity of an object
how to calculate acceleration / deceleration
(final velocity - initial velocity) / time (m/s2)