Balanced and Unbalaned Forces Forces that cause a

Balanced and Unbalaned Forces

Forces that cause a change in motion.

• http: //www. youtube. com/watch? v=oa. MTSOI 1 Zk 4 • What forces are changing your motion as you skydive? • What force is speeding you up? • What force slowing you down? • Are both forces acting on the sky divers at the same time?

When there is a combination of forces acting on an object this is called a ___________. The ____________ determines the change in the objects motion. (If it speeds up or slows down) From the forces shown what do you predict will happen to the sky divers speed? _______________________

• How do you find the net force? • If the forces are in the same direction you add them together. _______ N

• How do you find the net force? • If the forces are in opposite directions you subtract the forces. 30 N 10 N ____ N

The forces acting on the object can be balanced or unbalanced If they are unbalanced their will a change in the objects motion. How will this objects speed change? _________________ Find the Net force acting on the object. 10 N 5 N

The forces acting on the object can be balanced or unbalanced If they are balanced their will NOT be any changes in the objects motion. Explain how this object motion will not change. _________________ Find the Net force acting on the object. 10 N

Find the Net force acting on the object. ________ Are the forces balanced or unbalanced? ________ 10 N What will happen to the speed of the object? ____________________ How do you know this? ____________________ 12 N