Question

Two cars A and B are approaching each other head-on with speeds 20 m/s and 10 m/s respectively. When their separation is X then A and B start braking at 4 $m/s^2$ and 2 $m/s^2$ respectively. Minimum value of X to avoid collision is

• A. 60 m
• B. 75 m
• C. 80 m
• D. 90 m

Answer 1

Answer: (B)

Correct answer is (b) 75 m