Question

If the final velocity is 20.m/s, acceleration is 5.m/s and time is 2 sec find the initial velocity.

Answer 1

Answer:

30 m/s

Explanation:

final velocity (v) = 20m/ s

a=5m/s²

t = 2 s

u= ???

using the 1st equation of motion

v-u=at

we can find the initial velocity

u= v + at

u = 20 + 5 *2

u = 20 + 10

u = 30 m /s

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Answer 2

Given :-

If the final velocity is 20.m/s, acceleration is 5.m/s and time is 2 sec

To Find :-

Initial velocity

Solution :-

We know that

v = u + at

20 = u + 5(2)

20 = u + 10

20 - 10 = u

10 = u