1. the sum of the kinetic and potential energy in a system is known as the systems______energy.
A. mechanical
B. thermal
C. chemical
D. combined

2. if a ball tossed in the air has a maximum gravitational potential energy of 5.75 joules, what is the maximum kinetic energy in the same toss?
A. 5.75 J
B. 2.88 J
C. 11.14 J
D. 7.93 J

3. what is the MECHANICAL energy of the roller coaster car?
A. 100 J
B. 2500 J
C. 50 J
D. 1 J

4. This drawing illustrates which of the following?
A. conservation of mechanical energy
B. conservation of mass
C. conservation of momentum
D. conservation of matter

5. Is RUNNING Potential or Kinetic?
A. potential
B. Kinetic​