Physics
A body initially at rest, starts moving with a constant acceleration of 0.5 ms-2 and travels a distance 25 m, then its final velocity is:
- 5 ms-1
- 20 ms-1
- 15 ms-1
- -15 ms-1
Motion in One Dimension
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Answer
5 ms-1
Reason — Given,
u = 0
a = 0.5 ms-2
S = 25 m
v = ?
Using, v2 = u2 + 2aS
v2 = 0 + [2 x 0.5 x 25] = 25
Hence, v = 5 ms-1
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