Question

Q-A body moving with a constant acceleration
travels the distances 3 m and 8 m respectively in 1
s and 2 s. Calculate : (1) the initial velocity, and (ii)
the acceleration of body.
Ans. (1) 2 m s. (ii) 2 ms​

Answer 1

Answer:a=2m/s^2,u=2m/s

Step-by-step explanation:

Sn=u+a/2(2n-1)

3=u+a/2(2-1)

u=3-a/2....(1)

8-3=5m in 2nd sec

5=u+a/2(4-1)

u=5-3a/2....(2)

From 1 and 2 we get

3-a/2=5-3a/2

3a/2-a/2=2

a=2m/s^2

u=3-1=2m/s