Question

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?

  • motion CBSE Class 9
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Answer

Here we have,

Initial velocity, u = 0 m/s

Acceleration (a) = 2 cm/s2 = 0.02 m/s2

Time (t) = 3 s

Final velocity, v = ?

We know that, v = u + at

Therefore, v = 0 + 0.02 × 3 m/s

⇒ v = 0.06 m/s

Therefore the final velocity of trolley will be 0.06 m/s after start.

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