Question

a velocity acquired by a body moving with uniform acceleration is 20m/s in first 2 sec and 40m/s in first 5 sec . calculate intial velocity.​

Answer 1

Answer:

• t=2s , v=30m/s
• t=4s ,v=60m/s

this is given

a=60-30/4-2

a= 15

we know that

v=u+at

u=v-at

this is because we want to find u

u=30-15×2

u=30-30

u=0