1.  Homework: Read pgs. 51-53: Review notes: and begin Force packet- pages 1-4 due for check in on Tuesday  Do Now: Write down homework, put force packet away, Open notebooks to page. 10  Today I will… create a diagram that demonstrates why objects accelerate during free fall…  Identify Newton’s 3 Laws of motion

2.  The greatest velocity a falling object reaches- when the force of air resistance equals the weight of the object.  Air resistance increases with Velocity ◦ A falling object will eventually fall fast enough that the upward force-air resistance and downward force –gravity become equal. (**REMEMBER**)When forces are balanced  no acceleration  the velocity (speed) remains constant (even).

3.  2C: How would your weight change on the surface of an Earth- Sized Planet whose mass was greater than Earth’s? Why? ◦ Your weight would be greater because the gravitational force is greater  3A.Why does an object accelerate when it falls toward the Earth’s surface? ◦ Gravitational force causes the object to accelerate toward the Earth  3B: How does the mass of an object affect its acceleration during free fall?  An objects mass has no effect on its acceleration during free fall.

5.  http://www.youtube.com/watch?v=LEs9J2IQI ZY--Force and Gravity & Friction http://www.youtube.com/watch?v=LEs9J2IQI ZY--Force  http://www.youtube.com/watch?v=yHFtk6Si0 Fk- school house rock http://www.youtube.com/watch?v=yHFtk6Si0 Fk-