The Equation Below Describes a Physical Situation: Which

Multiple Choice

The equation below describes a physical situation: Which description best fits the equation?

A) A 1.70 kg block slows down while sliding down a frictionless plane inclined at a 30° angle.
B) A 1.70 kg block slows down while sliding down a plane with μ_k = 0.320, with the plane inclined at a 30° angle.
C) A 1.70 kg block speeds up while sliding up a frictionless plane inclined at a 30° angle.
D) A 1.70 kg block speeds up while sliding down a plane with μ_k = 0.320, with the plane inclined at a 30° angle.
E) A 1.70 kg block slides over the top of an inclined plane and then descends on the other side. Both planes, inclined at a 30° angle, have μ_k = 0.320.