Why doesn't the skateboarder rolls as high up the ramp each time you go down the ramp

A student practicing for track ran 800 meter in 110 seconds. what was her speed?

When the ratio of 2 variables is constant what can their relationship be described as

What are non examples of a medium?

How is the frame of reference used to measure motion

How much work would be needed to raise the payload from the surface of the moon (i. e., x = r) to the "end of the universe"?

Three balls are kicked from the ground level at some angles above horizontal with different initial speeds. All three balls reached in their paths the samemaximum height.

A solar eclipse will occur Group of answer choices 1. at every full Moon. during every new Moon. 2. at full Moon only when the Moon is on the ecliptic. 3. at new Moon only when the Moon is on the ecliptic.

What happens when energy in the molecules of an ice cube when it begins to melt

ll of mass m is thrown vertically upward with an initial speed of v0. It experiences a force of air resistance given by F = - kv, where k is a positive constant. The positive direction for all vector quantities is upward.

When combing your hair, you scuff electrons from your hair onto the comb. is your hair then positively or negatively charged? how about the comb?