SOLUTION: Please help, thanks a bunch A bicyclist is riding in a hilly area. She approaches a hill, and when she arrives at the bottom of the hill she is traveling at a speed of 15.0 m/s.

Algebra ->  Length-and-distance -> SOLUTION: Please help, thanks a bunch A bicyclist is riding in a hilly area. She approaches a hill, and when she arrives at the bottom of the hill she is traveling at a speed of 15.0 m/s.      Log On


   



Question 391521: Please help, thanks a bunch
A bicyclist is riding in a hilly area. She approaches a hill, and when she arrives at the bottom of the hill she is traveling at a speed of 15.0 m/s. After 1.0 minutes, she arrives at the top of the hill, and her speed is now 7.0 m/s. What is her average acceleration in m/s^2?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Acceleration is (change in velocity)/(change in time)
%287+-+15%29%2F60 m/sec2
-%288%2F60%29
-.1333 m/sec2
This is a deceleration, or a negative accelertion