Question

At an intersection on a road where the speed limit is 45

mi

hr

, a yellow light lasts 3

seconds. If the intersection is 15m wide, how far from the intersection can a car

traveling the speed limit be and still make it completely through the intersection?

For this problem you can ignore the length of the car. I got 45 m for this question but need help, on the next one.

At the same intersection a person decides to stop their car upon reacting to the

yellow light when their car is 60m from the beginning of the intersection. Based on

their reaction time, the driver waits 0.75s before applying the brakes once they see

the yellow light. If the car was initially traveling at the speed limit, what acceleration

would be required to stop the car at the beginning of the intersection?

Answer 1