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Third Equation of Motion

A body is mov...

Question

A body is moving with an intial velocity of u, and no acceleration. Its velocity after t seconds is given by _______.

A

ut

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B

u

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C

-u

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D

-ut

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Solution

The correct option is B u
Acceleration is defined as the change in the velocity of a body with time. Given that the body's acceleration is zero, its velocity would not change with time. So, after some time $t$ , the body will still be moving with the velocity $u$ .

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