A body moving with uniform acceleration has velocities 20 ms-1 and 30 ms-1 when passing two points A and B. Then the velocity midway between A and B is:
A. 25 ms-1
B. 24 ms-1
C. 25.5 ms-1
D. 106 ms-1
Velocity at A = u = 20 ms-1
Velocity at B = v = 30 ms-1
Acceleration = a
Let AB = x
Now, from the equations of motion, we know that,
a =
Now, at mid – point M, Velocity = vm
Also, AM =
So,
ms-1
Hence, option C is correct.