The energy in a mechanical system is determined by adding the potential and kinetic energy together.

Abike rider starts from rest and accelerates 28.0 meters down a slope in 5.00 seconds. what is her acceleration? select one: a. 3.21 m/sec2 b. 1.75 m/sec2 c. 9.80 m/sec2 d. 2.24 m/sec2

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

Select all the correct answers. which three statements about electromagnetic radiation are true?