a. less than its weight
b. more than its weight
c. its weight
d. zero
2007-07-22 14:20:51 · 4 answers · asked by eastfieldgiirl04 1 in Science & Mathematics ➔ Physics
The force of gravity is always acting on the object. As soon as the object is released, the only force on it is its weight.
2007-07-22 14:42:00 · answer #1 · answered by John B 6 · 1⤊ 1⤋
C. The force on the rock is the weight of the rock and it acts vertically downward.
The drag force is zero since it at the top of its trajectory. The buoyant force of the air is negligible.
2007-07-22 14:47:59 · answer #2 · answered by donpat 7 · 1⤊ 0⤋
The answer is: (c) its weight.
The force of gravity acting on its mass is its weight, by definition,i.e., w=mg. While travelling throughout its trajectory, it still has mass, and gravity is acting on it throughout, so its weight remains the same at all points in its trajectory. Its weight never changes.
2007-07-22 15:21:33 · answer #3 · answered by obiwan 2 · 1⤊ 0⤋
D.
NET force (instantaneous) = zero because velocity is zero.
.
2007-07-22 15:58:36 · answer #4 · answered by Anonymous · 0⤊ 1⤋