Physics problem????plz?

Question

Two horizontal forces, 225 N , are exerted on a canoe,. If these forces are applied in the same direction, find the next horzontal force on the canoe.

Answer 1

R2=A2+B2+2A*BSIN180

R=A-B [ZERO]

Answer 2

The net force is NOT zero! If you have two forces acting in the same direction, they add together. Think of the force exerted on someone at the bottom of a dog pile; they feel the weight of all their friends on top of them added together.

.......225 N........225 N..........

<--------------- <----------------

These two forces are the same as

.............550 N....................

<----------------------------------

Sound good? 225 N + 225 N = 550 N

If they acted in opposite directions:

....... -225 N........225 N..........

<--------------- +---------------->

Only now would the net force be zero. -225 N + 225 N = 0 N