An automobile, traveling at 40   km   h - 1 , can be stopped at a distance of 40   m by…

An automobile, traveling at 40 km h-1, can be stopped at a distance of 40 m by applying brakes. If the same automobile is traveling at 80 km h-1, the minimum stopping distance in metres is (Assume no skidding):
  1. 150 m
  2. 100 m
  3. 75 m
  4. 160 m

Solution

S=u22a
S1S2=u12u22⇒S2=u2u12S1=22 40=160 m

Asked in: JEE Main 2018 (15 Apr)

Practice more Motion In One Dimension questions on Aicharya