Q

A trolley while going down an inclined plane has an acceleration of 2 cm s raise to minus 2 What will be its velocity 3 s after the start

A trolley, while going down an inclined plane, has an acceleration of 2 cm s-2. What will be its velocity 3 s after the start?

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Given, The trolley starts from rest. Hence, the initial speed of the trolley,$u$ = $0\ ms^{-1}$

Acceleration of the trolley, $a$ = $2\ cms^{-2}$

Time is taken, $t =3\ s$

(a) We know, $v = u+at$

$\\ \implies v = 0+(2)(3) = 6\ cms^{-1}$

Therefore, the velocity of the trolley after 3 sec is $6\ cms^{-1}$

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