physics
posted by Kristie .
A 297kg motorcycle is accelerating up along a ramp that is inclined 25.9° above the horizontal. The propulsion force pushing the motorcycle up the ramp is 3156 N, and air resistance produces a force of 300 N that opposes the motion. Find the magnitude of the motorcycle's acceleration.

gravity also opposes the motion with a force of __ g * 297 * sin(25.9º)
sum the forces; then find the acceleration with __ f = m a