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Question 3

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?

Answer

Initial velocity of the trolley, u = 0

Acceleration, a = 2 cm s−2

Time, t = 3 s

According to the first equation of motion:

v = u + at

Where, v is the velocity of the trolley after 3 s from start

v = 0 + 2 × 3 = 6 cm/s

Hence, the velocity of the trolley after 3 s from start is 6 cm/s.

 

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