Question

The driver of a car traveling at a speed of 40 miles per hour had to stop the car quickly. If the driver`s reaction time was 34 of a second, approximately how many feet did the car travel during the driver`s reaction time? (1 mile = 5,280 feet)

Answer 1

Answer:

The car travel 44 feet during the driver`s reaction time.

Step-by-step explanation:

The sentence "If the driver`s reaction time was 34 of a second"  has to be changed as "If the driver`s reaction time was 3/4 of a second"

If the driver drives at a speed of 40 miles per hour, it means s/he travels

40 × 5280 = 211200 feet per hour.

1 hour is 60 minutes and 1 minute is 60 seconds.

That is, 1 hour is 3600 seconds.

Therefore the driver travels $\frac{211200}{3600}$ feet in a second.

And since the reaction time is $\frac{3}{4} =0.75$ of a second, the car travels $\frac{211200}{3600 } * \frac{3}{4}=44$ feet during the reaction time.