Which of the following is an example of kinetic energy?
a) a rock poised for a fall
b) an archers bow that is drawn back
c) a rolling bowling ball
d) a car waiting at a red light

Suppose that a comet that was seen in 563 a.d. by chinese astronomers was spotted again in year 1951. assume the time between observations is the period of the comet and take its eccentricity as 0.986. what are (a) the semimajor axis of the comet's orbit and (b) its greatest distance from the sun?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of