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Unt 5: impulse and Mometum

Unt 5: impulse and Mometum. Thought Questions for Today!. Answer the following Questions in Your Notebook:. How is momentum defined? Can two objects of differing masses have the same momentum? Explain. Why is momentum referred to as INERTIA in MOTION?

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Unt 5: impulse and Mometum

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  1. Unt 5: impulse and Mometum Thought Questions for Today!

  2. Answer the following Questions in Your Notebook: • How is momentum defined? • Can two objects of differing masses have the same momentum? Explain. • Why is momentum referred to as INERTIA in MOTION? • What happens to an object’s momentum when an external force is exerted on it over time? • Define impulse using a mathematical model. • Relate impulse to momentum.

  3. How is momentum defined? • Momentum (p) is the product of an object’s mass times its velocity. • p = mv • Momentum has the units kgm/s

  4. Can two objects of differing masses have the same momentum? Explain • YES. • Since p = mv. • The object with the smaller mass will have the greater velocity. • A 2 kg ostrich moving at 2 m/s will have the same momentum as a 0.02 kg bug moving at 200 m/s.

  5. Why is momentum referred to as INERTIA in MOTION? • Remember that Newton’s First Law (Law of Inertia) states that objects can be at rest or moving with constant velocity when balanced or no forces are acting on them. • An object moving with constant velocity has momentum! An object moving with constant velocity is Inertia In Motion!

  6. What happens to an object’s momentum when an external force is exerted on it over time? • An External Force exerted over a period of time on an object will CHANGE AN OBJECT’S MOMENTUM. • Impulse = F D t

  7. Define impulse using a mathematical model. • Impulse = F D t

  8. Relate impulse to momentum.

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