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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?

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a

5 cm / s

b

6 cm / s

c

3 cm / s

d

2 cm / s

answer is B.

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Detailed Solution

6 cm / s

will be the velocity

3 s

after the start.
Given:

u = 0, a = 2 cm / s², t = 3 s

Formula:

v = ut + at

Putting all the values we get,

v = 0 + (2 \times 3)

or,

v = 6 cm / s

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