Answer: force of gravity on the body due to height difference above the earth's surface
Explanation: as you increase the height of a body above ground, you do work against gravity in moving it from a point on the earth's surface to that point. So a body falling has a stored up gravito-potential energy which acts on it downward due to its mass, accelerating it downwards
Answer b): kinetic energy of the body
Explanation: the downward force produces an acceleration of magnitude 9.81m/s2 downwards which means an increasing velocity. This increasing velocity means the kinetic energy of the body is increasing (kinetic energy is proportional to velocity of the body squared)
A switch
What are the answers choices
Answer:
The human ear is most sensitive to sounds in the range of 2000 to 3000 Hz
Answer:
a parachute falling to the ground is uniform
Answer:
Francium has fewer valence electrons, but they are in a higher energy level
