Physical Science: Chapter 12, Section 3 Newton’s Third Law of Motion For every __________________force, there is an __________and ______________ force.

Physical Science: Chapter 12 Newton’s Third Law of Motion Newton’s Third Law of Motion This means that when one object exerts a force on a second object, the second object ______ ______________________ ______________________.

Physical Science: Chapter 12 Newton’s Third Law of Motion The “_____________” part means that the “reaction force”will be the ___________ ___________________as the “action force.” The “_____________” part means that the direction of the “reaction force” will be in the _________________________as the “action force.”

Physical Science: Chapter 12 Newton’s Third Law of Motion Forces always occur in ____________, 1. __________forces and 2.______________forces. Forces in pairs do _________act on the same object. Each force acts on a __________________object.

Momentum ______________is the “___________” of ____________of a ____________object. Momentum (____) of an object moving in a _______________line is calculated by multiplying the object’s ______times its __________. ______ = __________

Physical Science: Chapter 12 Newton’s Third Law of Motion Momentum Momentum is determined by the _____________of an object. Momentum is also determined by the ____________of an object.

Physical Science: Chapter 12 Newton’s Third Law of Motion Momentum Which one would have MORE momentum?

Physical Science: Chapter 12 Newton’s Third Law of Motion Momentum Momentum (p) can also be calculated by dividing the ____________needed to “stop” an object, divided by ________it took. ___ = __________

Momentum A catcher will pull their glove backwards as they catch a ball to increase the __________ it takes to stop the ball’s ____________________. Because it takes ________ for the ball to stop (lose its ____________) there is less ______________on the catcher’s hand.

Physical Science: Chapter 12 Newton’s Third Law of Motion Conservation of Momentum The Law of __________________________ _______________states that the _________ amount of momentum within an ____________system is “_________________.”

Physical Science: Chapter 12 Newton’s Third Law of Motion Conservation of Momentum Momentum can be _____________to a different object, but then the momentum of the first object is _______________.

If momentum is conserved, why don’t pool balls keep moving forever? The Law of Conservation of momentum applies to “_______ systems” that can’t lose __________to their _______________. A pool ball “system” (like most _______systems) is ____ isolated and can lose ______ to ___________.

Physical Science: Chapter 12 Newton’s Third Law of Motion Mini-Quiz #6 1). What is the common formula for momentum? 2). What does the Law of Conservation of Momentum state? 3). How much momentum in a bowling ball (mass 5.5kg) moving at 2.5m/s?

Physical Science: Chapter 12 Newton’s Third Law of Motion Mini-Quiz #6 4). Why is it better to take longer to change the momentum of an object? 5). When ISN’T momentum conserved? 6). In determining momentum, which is more important, mass or speed?

Physical Science: Chapter 12 Newton’s Third Law of Motion Mini-Quiz #6 7). Which one would have MORE momentum?

Physical Science: Chapter 12 Newton’s Third Law of Motion Things to Know 1). What does Newton’s Third Law of Motion state? 2). In Newton’s Third Law of Motion, what does equal and opposite mean? 3). Why don’t the two forces just “cancel out?”

Physical Science: Chapter 12 Newton’s Third Law of Motion Things to Know 4). What is the common formula for momentum? 5). What does the Law of Conservation of Momentum state? 6). How to calculate momentum, mass or velocity from the momentum formula.

Physical Science: Chapter 12 Newton’s Third Law of Motion Things to Know 7). Why is better to take longer to change the momentum of an object? 8). Why ISN”T momentum always conserved? 9). Know how to determine or calculate which object has more momentum.

Physical Science: Chapter 12 Newton’s Third Law of Motion Chapter 12 Section 3 Quiz 1). What is the common formula for momentum? 2). What does Newton’s Third Law of Motion state? 3). What does the Law of Conservation of Momentum state?

Physical Science: Chapter 12 Newton’s Third Law of Motion Chapter 12 Section 3 Quiz 4). If the action force is 20N to the South, what is the reaction force? 5). What is the momentum of a 4000kg elephant running at 2.0m/s? 6). When does the Law of Conservation of Momentum NOT work?

Physical Science: Chapter 12 Newton’s Third Law of Motion Chapter 12, Section 3 Quiz 7). Which one would have MORE momentum? Why?

Physical Science: Chapter 12 Newton’s Third Law of Motion Chapter 12, Section 3 Quiz 8). Which one would have MORE momentum? Why?