Question

Foggy day two drivers spot in front of each other and a team support they were travelling at 70 km per hour and 60 km per hour both apply brake simultaneously which retired the gods at the rate of 5 m per second square which of the statements is correct

Answer 1

Lets find the distance travelled by both before they come to a halting stop.

Car 1

u = 72kmph= 20 m/s

a = -5m/s2

v2-u2=2as

02-202=2*(-5)s

s= 40 m

Car 2:

u = 60kmph= 16.66 m/s

a = -5m/s2

v2-u2=2as

02-16.62=-2*5*s

s = 27.7 m

Since they are 80 m apart and sum of both their distance is less than 80, they would stop before time.

There would no collision.