The force that causes your car to gain momentum when going downhill is known as gravity.

Question

The force that causes your car to gain momentum when going downhill is known as gravity.

Answer 1

But if you are going to compute sine of the angle, be careful; the grade of a road is given (on a sign, for example) not in degrees, but in 'percent' of grade, which is the change of elevation in feet (in the US of A) per hundred feet. Six percent is pretty steep if you're a trucker.

Answer 2

I never knew that.

Thank you.

Answer 3

Is there a question to this?

Answer 4

Great question. I can't even find a question mark.

The statement is correct, though many of your terms are somewhat ambiguous. We usually refer to a change in a momentum in terms of impulses, which is the definite integral of force with respect to time. And also, if your going downhill, you don't get all the gravity; the acceleration is not g, it's g* sin (angle)

Next time, please state the question.