AP Physics with Hansenator - Momentum Lesson

in #physics7 years ago

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Momentum

  • Conservation of Momentum problems are situational. It depends on the number of objects. For example, if two objects collide and stick together they become one object with combined mass, the equation:

Example 1

Two cars travelling in opposite directions crash. Car 1 travelling left at 25 m/s with mass 2400 kg and Car 2 travelling right at 15 m/s with mass 1800 kg.
(a) If the cars stick together, what is their final speed?
(b) If Car 1 bounces back at 5 m/s, what is the final speed of car two and in which direction?
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Where does the impulse equation come from?

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Example 2

A 2000 kg car is travelling at 20 m/s and stops moving over a 10 second period. What was the magnitude of the average breaking force?
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Example 3

A mass of 2 kg is moving at a speed of 10 m/s along a horizontal, frictionless surface. It collides, and sticks, with a 3 kg mass moving in the same direction at 5 m/s.
What is the final velocity of the system after the collision?
What percentage of kinetic energy is lost in the collision?
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Thank you for your views Steemers! The support is much appreciated! Learn much and best wishes! Your pal ~ hansenator

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i appreciate your work. thanks for giving us wonderful solution my dear friend. @hansenator U5dseeYLZvKeH23fLXesf1HuaMiFd2c.gif

Thank you reyajahmedrazu! Haven't heard from you in a while. I hope to post some more SAT challenges for everyone!

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i agree your comment ....

I am glad to refresh your memory of physics. The next post is out! Java programming!

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Hey raja34. Thank you for your comment! I will see what I can do!

wonderful post.

Thank you!!! More to come!

This is very learning post for me. Thank you so much for share.

Learning is muy bien mi amigo! Best wishes to you! More to come!

Many nice posts. Everyone can learn a lot from your post. Thank you

I hope to teach thousands more with anything I can make up (or borrow haha)! See you soon shakilkhan!

Your presentations of friends are excellent. I liked a lot.
i am new so please follow me . i follow you everyday must

Haha. Thank you divid. If you keep up with me and post well I will follow you!

@hansenator beautiful way to teach momentum lesson by example. Thaks for sharing. keep sharing:)

Thank you kamchore! There is much beauty in physics!

Challenging lesson but, Sat math is more challenging!

Glad to hear from you rigor! I will try to get some more SAT questions for you soon!