A skier speeds down a smooth ski slope which is at an angle

Question

Compute all parts of given problem:

Problem: A skier speeds down a smooth ski slope which is at an angle of 26° with the horizontal. The mass of the skier is 69 kg. Take the downhill direction to be positive and uphill to be negative.

Part A: What net force is acting on the skier? (Indicate the direction with the sign of your answer.)

N

part B: What is the acceleration experienced by the skier? (Indicate the direction with the sign of your answer.)

m/s²

Part C: How does the net force experienced by the skier change if the ski slope becomes steeper?

Increases

Decreases

Remains the same

Please also explain each step, thank you in advance.