Emma's Challenge Problem of the Week
Good Luck!  Answers due Friday, March 12th
Print a copy of the page... work the problem below... place in the basket in the front of the room.

Angie drives her Mustang to MND in the morning and stops to pick up a Starbucks latté. She places the coffee cup on her car's dashboard. It will slide forward when she decelerates from 45 km/hr to rest in 3.5 seconds or less, but not if she decelerates in a longer time. What is the coefficient of static friction between the cup and the dash?

Name:_____________________________________       Class (circle one):   AP A Section    AP B Section