Question

u = 108km/h v =36km/h s= 400m find acceleration​

Answer 1

Explanation:

Initial Velocity = v = 108km/h = 30m/s

Final Velocity = u = 36km/h = 10m/s

Time taken = t = 4s

From first equation of motion

v = u + at

10 = 30 + a(4)

-20 = 4a

-5 m/s² = a

So acceleration is -5m/s²

Answer 2

Answer:-1 m/s2

Explanation:

That means the body is undergoing retardation.