Question

A body is moving with a velocity 50 m/s On applying a force on it, it comes to rest in 5 s. If so the retardation is:

• A. 10 m/s²
• B. 5 m/s²
• C. 50 m/s2
• D. 50 m/s

Answer 1

Answer:

A. 10 m/s²

• v=u+at • Initial velocity = 50m/s • Final velocity (v) = 0 m/s •time=5s • acceleration=-50/5=-10m/s2 • retardation=-a=10m/s2