- #1
christinaa_s
- 15
- 0
QUESTION: An alcohol free driver needs 0.8 s to stop after seeing an emergency. A person who has had 4 beers need 2 seconds, a person who has had five, need 3 seconds. If driving at speed of 17 m/s, find the reaction distance (after seeing emergency, the distance traveled before pressing brakes) for the all three times. What if the speed is 25 m/s. What if it is 33 m/s.
so first i had to find acceleration, then the reaction time.
for the non-alcoholic the acceleration is:
for 25m/s acceleration = 31.25
for 33 m/s acceleration = 41.25
if i have the acceleration how do i find the distance it took to stop. And is this acceleration supposed to be negative?
so first i had to find acceleration, then the reaction time.
for the non-alcoholic the acceleration is:
for 25m/s acceleration = 31.25
for 33 m/s acceleration = 41.25
if i have the acceleration how do i find the distance it took to stop. And is this acceleration supposed to be negative?