Forces Test SG
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| force that pulls objects towards each other | gravity
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| product of an object's mass & velocity transfer of energy from one object to another | momentum
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| tendency of an object to resist any change in motion | inertia
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| Newton's first law states, "An object in motion will continue in motion." Why does an object stop? | friction& gravity
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| What is the net force of a balanced force? | 0
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| What is the net force of an unbalanced force | greater than 0
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| WHat is the difference between weight and mass? | mass- balance
weight- gravity
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| Why does mass not make a difference in free fall? | all accelerate at the same rate regardless of mass
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| How does gravity affect objects that are moving horizontally? | objects will hit the ground at the same time
(pulls objects down)
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| How is mass related to inertia | more mass greater inertia
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| How is mass related to momentum? | the more mass
more momentum
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| What happens to the momentum of 2 objects after they collide? | energy is absorbed or transferred from one object to another
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| What acceleration does all objects free fall? | 9.8 meters per second squared
32ft. per sec. squared
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| occurs when a solid object moves through a fluid Examples- surfing& swimming | fluid friction
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| friction that occurs when one solid surface slides over another examples- iceskating skiing | sliding friction
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| friction that acts on objects that aren't moving examples- cup table | static friction
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| when an object rolls across a surface examples- bicycle skateboards | rolling friction
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| Newton is perhaps most famous for what? | three laws about objects in motion and the forces that act on them
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| Newton's work wrote them and called them what? | Newton's laws of Motion
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| Newton's first law f motion concerns | inertia
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| objects that are still remain | still
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| objets that are moving | continue moving with a constant velocity
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| Newton's second law concerns | acceleration
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| A bowling ball is more difficult to do what than a tennis ball | throw
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| Newton's third law of Motion is what | the motion of action and reaction
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| when you hit a baseball with an aluminum bat | the ball has another equal and opposite reaction
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| Inertia lab | pennies
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| Acceleration depends on | he object's mass and on the net force acting on it
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| An object moving at a contsant velocity | will continue moving unless acts don by an unbalanced force
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| if one object exerts the second object exerts force of equal strength in the opposite direction on the first object | 3rd law
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| mass times velocity = | momentum
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| the equation for newton's second law is... | forces= mass times acceleration
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| golf ball lab | 3rd law-momentum
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| Momentum equation is... | mass times velocity = momentum
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| golf ball lab | newton's 3rd law
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| rocket lab | newton's second law
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Created by:
ewoodham
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