Question

A 1.761 km car is moving down a road with a slope (grade) of 12% at a constant direction and magnitude of the frictional force?

Please show step by step if possible, I am extremely lost! Thanks!

Answer 1

constant speed? that means the force of gravity down the slope is exactly equal to the force of friction, so the gravity force down the slope is...

mgSinTheta

Answer 2

I'm sorry, I wrote the question wrong! Correctly, the questions reads:
A 1.761 km car is moving down a slope of 12% at a constant velocity of 17 m/s. What I'd the direction and magnitude of the frictional force?

Again, sorry!

Answer 3

the fricioal force is upward. it's magnitude is equal to the quantity I specifid.

Answer 4

great, thanks so much!