Recent content by Lelex

Thanks for looking. I found out the reason I kept getting it wrong was that I forgot the negative sign. It's the silly mistakes that do you in.

okay, so I've tried this problem and I keep getting it wrong. I would really appreciate some help in solving it. Here is the question: The parachute on a race car of weight 8820 N opens at the end of a quarter-mile run when the car is traveling at 35 m/s. What total retarding force must be...