Consider the inclined plane (i.e., ramp) in Figure 2.23A, and assume it is covered with a...

Consider the inclined plane (i.e., ramp) in Figure 2.23A, and assume it is covered with a layer of ice so that it is extremely slippery (frictionless). The horizontal surface of the bottom is not covered with ice, however. A box is released from the same height on the ramp for a number of trials and slides down the ramp. For each trial, the box encounters a different horizontal surface at the bottom of the smooth ramp. Draw qualitative plots to compare the velocity as a function of time for each case: (a) a grass field, (b) an asphalt street, (c) a hardwood floor, (d) an ice rink, and (e) an ideal, frictionless surface.

Figure 2.23 When a ball rolls along this two-part incline, its velocity increases linearly with time while on the initial (sloped) portion, and v is then constant on the final (flat) portion.