Asked by momo

A person is driving on a level road and see's a sign 180m ahead in the middle of the road. The person strikes the sign at a speed of 60km/h. If the person was travelling at 90km/h when the sign was first spotted what was the students perception-reaction time?
How far back should the student have first observed the sign to be able to stop safely at a comfortable deceleration rate before hitting the sign?
Answered by Trinity
First please tell me what you have as an answer, or what you think it is. Then I will gladly help you!
Answered by Kasun
Hey i got 4.9 seconds as my perception-reaction time. Don't know if this is right though. Not sure how to solve the second part of the question.
There are no AI answers yet. The ability to request AI answers is coming soon!