Question

A driver is traveling 18.4 m/s when she sees a red light ahead. Her car is capable of decelerating at a rate of 3.65 m/s^2 .
How far from the beginning of the intersection will she be?

Answer 1

Answer:

46.38 m

Explanation:

Initial velocity, u=18.4m/s

Final velocity, v=0 m/s

Acceleration, a=-3.65m/s²

Using the third equation of motion,

v²-u²=2aS

S=(v²-u²)/2a = -(18.4²)÷(2×-3.65) = 46.38 m