The resulant/net force two forces p and q is 7 n which of the following is the maginitude of force Q if force p is equal to 3N? A. 2N B. 3N C. 8N D 13N
Think of this as a triangle. There is no way you could make p and q fit together if one of them is 2 or 3 and the other is given as 3. The most those two would be 6 which is less than 7.
8 would work. You'd get a triangle where 3 went up and 7 was horizontal. You could make 8 work.
