Question

a body is at rest attaining accelaration of 4ms2 .find its velocity at the end of half a meter

Answer 1

Answer:

56

Explanation:

I have told this in what I took in my mind

Answer 2

The final speed of the body is 2 m/s.

Explanation:

Given that,

Initial speed of the body, u = 0

Acceleration, $a=4\ m/s^2$

Distance, d = 0.5 m

Let v is the final velocity of the body. Using the third equation of motion as :

$v^2-u^2=2ad$

$v^2=2ad$

$v=\sqrt{2ad}$

$v=\sqrt{2\times 4\times 0.5}$

v = 2 m/s

So, the final velocity of the body is 2 m/s. Hence, this is the required solution.

Learn more :

Equation of motion

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