Question

Ann is driving down a street at 5.5 m/s. Suddenly a child runs into the street.

a. It takes Ann 0.75 seconds to react and apply the brakes. Before she applies the brakes, she is driving with a constant speed of 5.5 m/s. How many meters will she have driven before she begins to slow down?

Answer 1

Ann will have driven 4.125 meters before she begins to slow down, calculated by multiplying her constant speed of 5.5 m/s by her reaction time of 0.75 seconds.

Step-by-step explanation:

To determine how many meters Ann has driven before she begins to slow down after reacting to a child running into the street, we use the equation for distance traveled at constant velocity:

Distance = Speed × Time

Given that Ann is driving at a constant speed of 5.5 m/s and her reaction time is 0.75 seconds, we can calculate the distance as follows:

Distance = 5.5 m/s × 0.75 s = 4.125 meters

So, Ann will have driven 4.125 meters before she begins to slow down.