Question

If a body starts from rest then which of the following is correct?
a. vf=vi b. vi=-at c. vf=at d. vf-vi=t

Answer 1

Answer:

Here is your answer

Explanation:

option C)vf=at

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Answer 2

The correct option is (c) "$v_f=at$".

Explanation:

Let $v_i$ is the initial speed of an object and $v_f$ be its final speed. In this case, it is given that the body starts from rest. It means that the initial speed of the object is equal to 0 i.e. $v_i=0$.

We know that the first equation of motion is given by :

$v_f-v_i=at$

a is the acceleration of the object

t is the time taken

$v_f=at$

So, the correct option is (c) "$v_f=at$". Hence, this is the required solution.

Learn more,

Equation of motion.

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