Which statement describes an energy measurement? A. Burning natural
gas releases
21,000 kJ.
B. An object travels 14 m.
C. A rocket travels at 11 m/s.
D. A car has a mass of 1,250 kg.

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

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane

Which change would make the diagram correct?