A coin which is tossed straight up into the air. After it is released it moves upward, reaches its highest point and falls back
down again. Use one of the following choices (A through G) to indicate the force acting on the coin for each of the cases described below. Answer choice J if you think that none is correct. Ignore any effects of air resistance. (A) The force is down and constant
(B) The force is down and increasing
(C) The force is down and decreasing
(D) The force is zero.
(E) The force is up and constant.
(F) The force is up and increasing
(G) The force is up and decreasing
the motion of a body is as a result of the various forces acting on it.
As the coin is tossed upwards an upwards force acts on it and this force decreases up to the highest point the coin reaches. at the highest point the force of gravity applies. This force is downwards and constant (9.8m/).
first, you multiply both sides by 2; 77+x=168 then you subtract 77 from both sides; x=91 then you plug it back in to check; (77+91)/2=84 ; 168/2=84 ; 84=84
