What is the KE of a 13kg boulder moving at 78.3m/s?

Acoyote chasing a rabbit is moving 8.00 m/s due east at one moment and 8.80 m/s due south 4.25 s later. let the x axis point due east and the y axis point due north. find the direction of the coyote's average acceleration during that time.

The heliocentric and the geocentric models of the solar system included these central principles

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a. true or b. false