Question

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

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Answer 1

u=0 ( since the trolley starts from rest)

a=2 cm/s²

t=3s

v=?

v = u + at

v = 0 + 2*3

v = 6 cm/s

Ans. v = 6 cm/s

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Answer 2

Solution,

Here, we have

Initial velocity of the trolley, u = 0 (As starts from rest)

Acceleration of the trolley, a = 0.02 m/s²

Time taken by the trolley, t = 3 seconds

To Find,

Final velocity of the trolley, v = ?

According to the 1st equation of motion,

We know that,

v = u + at

So, putting all the values, we get

⇒ v = u + at

⇒ v = 0 + 0.02 × 3

⇒ v = 0.02 × 3

⇒ v = 0.06 m/s

Hence, the final velocity of the trolley is 0.06 m/s.