Question

The adjoining curve represents the velocity time graph of a particle, it's acceleration values along OA, AB, BC in m/sec*2 are respectively :
1) 1, 0, -0.5
2) 1, 0, 0.5
3) 1, 1, 0.5
4) 1, 0.5, 0

Answer 1

1) V max= 10

a=V/t= 10/10= 1

a(0A)=1m/s²

2)v(AB)= const

a(AB)=0

3)a=10/20=1/4=0.5

As the v is decreasing (decceleration takes place)

a(BC)= -0.5

Answer is a

I hope this helps ( ╹▽╹ )