Answer to Question #251689 in Mechanics | Relativity for Kai

Question #251689

A car travelling at a speed of 50 mph. The driver saw a roadblock 80m ahead and stepped on the brake causing the car to decelerate uniformly at 10 m/s². Find the distance from the roadblock to the point where the car stopped. Assume perception reaction time is 2 seconds.


1
Expert's answer
2021-10-18T11:02:03-0400

v=50 mih=22.35 ms,v=50~\frac{mi}h=22.35~\frac ms,

l=lvt=35.3 m,l'=l-vt=35.3~m,

s=lv22a=10.3 m.s=l'-\frac{v^2}{2a}=10.3~m.


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment