a driver shifts into neutral when her 1500 kg car is moving at 30 m/s and finds that her speed has dropped 25 m/s ten seconds later. How great was the force of friction which acted to slow her car?

Question

abhisar · Answer

Hello @dray71837 ,
Welcome to openstudy !

abhisar · Answer

Do u have the answer to this question ?

abhisar · Answer

Initial speed = 30 m/s
Final speed = 30-25=5 m/s
Time = 10s

Using v=u-at
5=30-10a
a=2.5 m/s^2

Force= mass*acceleration
Force=1500*2.5=37500N

abhisar · Answer

*3750N

anonymous · Answer

Thank you very much!