Question

a body started with rest when its uniform acceleration was 2 m/s square. what is its velocity if displacement is 4m?
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Answer 1

Answer:

v^2-u^2=2as

v^2-0= 2×2×4

v^2=16m/s

v=4m/s

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Answer 2

Answer:

Using third equation of motion,

v^2 - u^2 = 2as

=> v^2 - 0 = 2 × 2 × 4

=> v^2 = 16

=> v = 4

Therfore velocity is 4m/s

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