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Question

A car is moving from A to B in straight line at constant acceleration. If velocities at A and B are u and v respectively, then velocity at the midpoint of A and B is

A
v+u2
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B
2uv4+v
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C
u2+v22
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D
vu2
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Solution

The correct option is C u2+v22

v2=u2+2a×2d
v20=u2+2ad
v20=u2+v2u22v20=u2+v22v0=u2+v22

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