Question

Derive the formula v=u+at . A bus was moving in a speed 54 km/s.on applying brake it stopped in 8 seconda find the acceleration

Answer 1

Answer:

−1.87m/s2= 60.2m

Explanation:

u=54km/h=54×1000m60×60s=15m/s,v=0,t=8s,a=?,s=?

From v=u+at , a=v−ut=0−158=−1.87m/s2

From s=u+12at2 , s=15×8+12(−1.87)(8)2=60.2m