Which of the following is a device that uses an inclined plane? Check all that apply.
A. knife
B. wheelchair ramp
C. bicycle
D. half-pipe at a skate park

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?