For W1 I figure gravity is vertical and this is horrizontal, same with normal. S

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For W1 I figure gravity is vertical and this is horrizontal, same with normal. Seems the only thing acting is friction but its possible this is 0 too?

For W2 I figure gravity is pulling down the ramp acting towards the motion making it possitive, there is friction between the toy and the ramp. Not sure about normal except if you draw a free body diagram it seems to be working. Maybe normal is > and friction is < .

W3 gravity is pulling it down acting against motion making it negative. There wouldn't be any friction if its off the ramp. What about normal? Is it acting against gravity making it possitive?

W4: gravity is now acting in direction of motion making it positive. One hint I got was "Incorrect. While there is no normal force acting on the action figure while it falls toward the ground, there is a normal force once the figure comes in contact with the ground."

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