Question

A driver traveling at 40 m/s slams on his brakes the vehicle completely stops in five seconds how far to the vehicle go while stopping

Answer 1

Answer:

200m

Explanation:

Velocity = displacement/time

V = s/t

Given

Velocity = 40m/s

Time = 5 secs

Therefore

40 = S/5

Cross multiply

S = 40 x 5

S = 200m

The vehicle travelled 200m before stopping

Answer 2

Answer: 100 m

Explanation:

Initial speed(u) = 40 m/s

Final speed(v) = 0 m/s

Acceleration = v-u/t

=> 0-40/5

=> 8 m/s^2

Displacement= s

=> 2as = v^2-u^2

=> 2(-8)(s) = 0 - (40)^2

=> -16s = -1600

s = 100 m

We can say the vehicle move 100 meters before stopping.