Question

Two cars are travelling towards each other on a straight road at Velocities 15 m/s and 16 m/s respectively. When they are 150m apart, both the drivers apply the brakes and the cars decelerate at $3 m/s^2\, and \,4 m/s^2$ Until they stop. Separation between the cars when they come to rest is

• A. 86.5 m
• B. 89.5 m
• C. 85. 5 m
• D. 80 .5 m

Answer 1

Answer: (D)

80 .5 m

Answer 2

$y^2 - u^2 = 2as$ (twice)