You are standing at a red light on SW 8th Street at 97th Avenue. The light turns green, you start speeding up, and the moment you reach 98th Avenue you reach a speed of 43 mph. What is the work done on your 1,277-kg car by the frictional force excerted from the road on the tires.

Question

anonymous · Answer

Every 10 avenues is .1 miles

amistre64 · Answer

im not sure that i understand the question as stated.

With the information given, we could possibly determine the acceleration of the car

and Force = mass x accel.    Im thinking work is equal to Force x distance.

But there is not coeffs of friction given or total energy of the system/ loss with which to compare with.

So im pretty much stymied ....

anonymous · Answer

That is exactly how I feel it only says that so I don't even know what to do

amistre64 · Answer

since a tire is round, would we have to play with the circle versions?  i dont see that being a viable option since we dint know the radius ....

I think its just asking us the work done to move the car

amistre64 · Answer

What are our definitions of Work?

amistre64 · Answer

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