A lorry driver sees a old man crossing the road Suddenly he brakes and stops within 30 seconds - Science - Motion and Time

Question

A lorry driver sees a old man crossing the road Suddenly he brakes
and stops within 30 seconds If the initial speed of the lorry is
108km/hr find its declaration?

Ravi Gupta · Accepted Answer

u = 108km/h = 108×518 = 30m/st = 30sv= 0v = u + at0 = 30+30aa = -1 m/s2declaration is 1m/s2

A lorry driver sees a old man crossing the road . Suddenly he brakes and stops within 30 seconds . If the initial speed of the lorry is 108km/hr find its declaration?