Using Unit Vectors to find Acceleration, Mass, and Velocity of 3 Forces (9:28)
An object has three forces acting on it. We determine the direction of the acceleration, the mass, and the final velocity.
This is an AP Physics C: Mechanics topic.
0:00 The example
0:51 Finding the net force
2:48 Part (a) Finding acceleration direction
3:28 Part (b) Finding mass
4:07 Part (c) Finding velocity
4:42 A common mistake
5:36 Part (c) Finding velocity correctly
7:39 Comparing velocity and acceleration directions
8:47 Summing the forces is vector addition