Momentum “Keep Goingness” of an object. p = mv where p = momentum

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Presentation transcript:

Momentum “Keep Goingness” of an object. p = mv where p = momentum m = mass in kg v = velocity in m/s

Head on collision - small vs big They can stop dead. i.e. mv = mv

Example: What is the momentum of a 145 g baseball going 40. m/s? 5.8 kgm/s

Example: 60 kg Fran is running at 4 m/s when she collides with 80 kg Joe. They hit and stop dead, so how fast was Joe going? 3 m/s

Example: 60 kg Fran is running at 4 m/s when she collides with 80 kg Joe. They hit and stop dead, so how fast was Joe going? Conservation of momentum 3 m/s

What is the momentum of a 22 g swallow going 5.2 m/s 0.11 kgm/s

What velocity must a 6. 5 gram bullet have for its momentum to be 5 What velocity must a 6.5 gram bullet have for its momentum to be 5.8 kgm/s? 890 m/s

A bowling ball has a momentum of 43. 6 kgm/s when it is going 12 m/s A bowling ball has a momentum of 43.6 kgm/s when it is going 12 m/s. What is its mass? 3.6 kg