Question

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Answer 1

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(1) First equation of Motion:

V = u + at

soln.

Consider a body of mass “m” having initial velocity “u”.Let after time “t” its final velocity becomes “v” due to uniform acceleration “a”.

Now we know that:

Acceleration = change in velocity/Time taken

=> Acceleration = Final velocity-Initial velocity / time taken

=> a = v-u /t

=>at = v-u

or v = u + at

Answer 2

Answer:

I think we have to use 1 equation

v= u + at where acceleration = change in velocity/ time or final velocity- initial velocity/2