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?
2 answers
First please tell me what you have as an answer, or what you think it is. Then I will gladly help you!
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.