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Question 8
(a) Define acceleration.
(2)
(b) A body has an initial velocity u and an acceleration a. Aller a time i the body has moved
a distance s and has a final velocity v. The motion is summarised by the equations
V = U+ al,
klu + v)
(1) State the assumption made about the acceleration a in these equations.
SS
(11) Use the equations to derive an expression for v in terms of a and s.
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(c) A photographer wishes to check the time for which the shutter on a camera stays open
natoomph in boing token To do this a metal hall is photographed as it falls
