chapter 14, lesson 2
TRANSCRIPT
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Chapter 14, Lesson
2Newton’s Second
and Third Laws of Motion
massacceleration/forceacceleration/massbalanced forces
unbalanced forcesmomentum
actionreaction
worksimple machines
leverfulcrum
effort armresistance arm
pulleywheel and axle
rampinclined plane
wedge screw
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mass – A measure of the amount of matter in an object. The mass of an
object is related to the force required to accelerate it.
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acceleration/force – the more force you apply, the greater the
acceleration
Click on the picture for some great questions about acceleration and force!
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acceleration/mass – the greater the mass, the more force necessary to
get an object to accelerate
Click on the picture!
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balanced forces – when all the forces on an object cancel each other out, you have balanced
forces – no acceleration, no momentum
Click on the picture for some great questions about balanced and unbalanced forces.
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unbalanced forces – when forces don’t cancel each other out, there is movement. This is a
result of unbalanced forces.
Click on the picture for some information about unbalanced forces.
Click on the picture for some information about kinds of forces.
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momentum – momentum measures how difficult it will be to stop an object
Click on the picture for some information about momentum.
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Newton’s First Law of Motion – “An object at rest tends to stay at rest; an object in
motion tends to stay in motion.”
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velocity – the speed of a moving object taken together with its
direction of travel
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acceleration – a change in velocity
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acceleration – a change in velocity
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deceleration – when a force causes the speed of an object to decrease
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incline – a ramp/slope
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pendulum – something hanging from a fixed point that swings
due to gravity and then out due to inertia
Click on the picture below to check out a link on pendulums
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gravity – something hanging from a fixed point that swings
due to gravity and then out due to inertia
Click on the picture below to check out a link on gravity.