Ask a New Question

Question

Angelo is driving at 15.0 m/s when he saw a stalled car 75 m ahead. At what rate must he slow down his car so that it will stop 0.5 m before hitting the stalled car? His reaction time is 1.2 s.
3 years ago

Answers

oobleck
in 1.2 seconds, the car will travel 18m, so the stopping distance is only
75-18-0.5 = 56.5m
So now we need to find a and t such that
15+at = 0
15t + 1/2 at^2 = 56.5
15(15/a) - 1/2 a (15/a)^2 = 56.5
a = -2 m/s^2
3 years ago

Related Questions

Angelo says that if you know one unit rate in a proportional relationship, the other unit rate is al... Angelo is driving at 15.0 m/s when he saw a stalled car 75 m ahead. At what rate must he slow down h... Angelo is looking to become employed as a renewable energy consultant. What kind of education or pro... Angelo is looking to become employed as a renewable energy consultant what kind of education or prof... Angelo is looking to become employed as a renewable energy consultant. What kind of education or pro... Matt and Angelo were out trekking in the Greenock National Park close to home, and they had been... Matt and Angelo were out trekking in the Greenock National Park close to home, and they had b... Matt and Angelo were out trekking in the Greenock National Park close to home, and they had bee...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use