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Q.

A trolley while going down an inclined plane has an acceleration of 2 cm/s². What will be its velocity 3 s after the start___cm/s?


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a

5 

b

6 

c

3 

d

2  

answer is B.

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Detailed Solution

A trolley, while going down an inclined plane, has an acceleration of 2 cm/s². Its velocity 3 s after the start would be 6 cm/s.
Given: u = 0, a = 2 cm/s², t = 3 s
Formula: v = u + at
Putting all the values, we get
⇒ v = 0 + (2×3)
⇒ v = 6 cm/s
 
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