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:

By using equation of motion

V = U + at

V= 20

a= 5

t = 2

U = ?

20 = U + 5*2

U = 10 m/s

Answer 2

Given:-

Final velocity(v)=20m/s

Acceleration(a)=5m/s²

Time(t)=2s

To find:-

Initial velocity(u)

Solution:-

By the first equation of motion,we get-------

=>v=u+at

=>20=u+5×2

=>20=u+10

=>u=20-10

=>u=10m/s

Thus,initial velocity is 10m/s.