Transcription of Chapter 7 Momentum and Impulse
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Chapter 7 Momentum and Impulse
Chapter 7 Chapter 7 Momentum andMomentum andImpulseImpulseCollisions!How can we describe the change in velocitiesof colliding football players, or balls collidingwith bats?!How does a strong force applied for a veryshort time affect the motion?!Can we apply Newton s Laws to collisions?!What exactly is Momentum ? How is itdifferent from force or energy?!What does Conservation of Momentum mean?What happens when a ball bounces?"When it reaches the floor,its velocity quickly changesdirection."There must be a strongforce exerted on the ball bythe floor during the shorttime they are in contact."This force provides theupward accelerationnecessary to change thedirection of the ball happens when a ball bounces?"Forces like this aredifficult to analyze:#Strong forces that actfor a very short time.#Forces that may changerapidly during the collision .
Collisions!How can we describe the change in velocities of colliding football players, or balls colliding with bats?!How does a strong force applied for a very
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