1. Momentum and Impulse Concepts Mr. Schlamb

2. Bell Ringer  What is momentum include the equation and units  What is impulse include the equation and units  Which has more momentum a baseball traveling at 5 m/s or a softball traveling at the same speed? Explain.

3. Impulse  The equation for impulse is derived from Newton’s second law of motion  F=ma where a=v/t so F=m(v/t) multiply both sides by t and you get Ft=mv  Impulse can be increased in two ways 1.Increase the force (decrease give) 2.Increase the time interval over which a force acts

4. Impulse  A large force over a small amount of time will have the same impulse if you siwtch the values.  Ex. 30N(1s)=30Ns or 1N(30s)=30Ns  Same impulse in both  This concept is used when making safety features in vehicles

5. Momentum  The other side of Newton’s modified second law of motion Ft=mv is momentum  Momentum is represented by p so p=mv  Momentum can be increased in two ways 1.Increase the mass 2.Increase the velocity at which the mass is moving

6. Momentum and Impulse  Momentum and impulse are both direct correlations  If one value is doubled and the other value is kept the same the final value will be doubled  Same as if a value is tripled the final value will be three times a large as the original value  https://www.youtube.com/watch?v=XFhnt Pxow0U https://www.youtube.com/watch?v=XFhnt Pxow0U

7. Momentum and Impulse  Assume I throw a baseball (0.145 kg) at a speed of 52 m/s what is the momentum?  Aroldis Chapmans can throw a baseball twice as fast as I can what is the momentum if he throws the baseball?  You swing a baseball bat with a force of 450N and you make contact with Aroldis Chapmans pitch. You maintain contact with the ball for 0.5s. What is the impulse?

8. 2-D  https://www.youtube.com/watch?v=CFygKiTB-4A https://www.youtube.com/watch?v=CFygKiTB-4A