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Hi All,
I had this as a question on an exam, and had a hard time convincing the kiddosof the correct answer. Could someone help me to explain it in a different
way?
Thanks.
J. Westfall, Sonora High
A rock is thrown up from the earth's surface. Which one of the followingstatements concerning the net force acting on the rock at the the top of it's
path is true?
A. The net force is equal to the weight of the rockzero newtons.
B. The net force is instantaneously equal to zero newtons
C. The net force's direction changes from up to down
D. The net force is greater than the weight of the rock
E. The net force is less than the weight of the rock, but greater than