Recall that the stopping distance of a vehicle traveling at v miles per hour is din feet)
round all answers to the nearest hundredth, where necessary
a. what is the stopping distance for a car traveling at 70 mph? do not round your answer.
feet
b. if it takes you 130 feet to come to a complete stop, how fast was your car traveling?
mph
c. convert 70 miles per hour to feet per second
feet per second
d. you are traveling with 70 mph, and there is an accident in front of you. you jump on the brake but your
reaction time is 0.9 seconds. what is the stopping distance?
feet
e. brakes do not engage instantaneously either. there is an additional time required for the pedal to depress and
for the brakes to engage in an emergency, a reasonable estimate is 0.2 second. find the additional stopping
distance resulting from this delay in the engagement of the brakes.
additional feet
f. what is the total stopping distance including the results from parts (d) and (e)?