m x h x 9.8 m/s squared
70 kg x 3 m x 9.8 m/s squared= 2058 Joules
The correct answer is letter A
Answer:
A: In an observer's reference frame, motion lacking uniform velocity includes motion at constant or variable speed in a circle; and motion of a reciprocating device. Supposing the zero refers to the “uniform velocity” rather than the motion removes the possibility of an object at rest.
Explanation:
C.
The kilogram SI unit is based off an original prototype that is kept in France. The prototype itself is based off the mass of water under special conditions for temperature as well as pressure.
Explanation is in the file
tinyurl.com/wpazsebu