AM-1922

Kinematics with calculus

A Math · Secondary 4 · Medium · Kinematics with calculus

A particle moves in a straight line so that its velocity

v\,\text{m s}^{-1}

at time

t

seconds is given by

v=4\cos(\pi t)

. How many times is the particle instantaneously at rest in the interval

0\le t\le 6

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