Homework Help: College Physics

Posted by Angela on Sunday, September 19, 2010 at 9:44pm.

A car initially traveling northeast (45° N of E) at 28.3 m/s takes 6.0 s to turn to the east. After the turn, the car is traveling due east at 20.0 m/s. What is the value and direction of the change in velocity?

College Physics - bobpursley, Sunday, September 19, 2010 at 9:52pm
change in velocity= finalvelocity-initialvelocity

breakthe initial velocity into N,E components.

Vi=28.3*.707N+28.3*.707E
Vf=20 E

subtract. change in velocity=Vf-Vi
College Physics - Angela, Sunday, September 19, 2010 at 11:06pm
thank you

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