AM-1921

Kinematics with calculus

A Math · Secondary 4 · Hard · Kinematics with calculus

A particle moves in a straight line so that its velocity

v

m s

^{-1}

at time

t

seconds is given by

v=4\sin\left(\dfrac{\pi t}2\right)+2

.

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

0\le t\le6

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