Science
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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| Newton's First Law | An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an outside force. "Inertia"
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| Newton's Second Law | An object acted upon by a force will accelerate in the direction of the force.
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| Newton's Third Law | For every action there is an equal and opposite reaction.
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| Speed Formula | speed equals distance divided my time (m/s)
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| Acceleration Formula | final speed minus initial speed divided my time (m/s2)
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| Momentum Formula | mass times velocity (p=mv)
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| Change in Velocity Formula | change in velocity equals gravitational force times time
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| Momentum | a measure of how hard it is to stop an object
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| Weightlessness | when an objects weight "seems" to be zero because gravity "seems" to be absent
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| When you push on a wall... | the wall pushes back on you with the same amount of force
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| What type of pairs are used constantly when you move? | action-reation pairs
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| When the action-reaction force not noticeable? | when the mass of an object is considerably larger than the mass of another object
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| Why does a boat move backward when you jump off of the boat to a pier? | You push off of the boat, causing it to move backwards, The boat pushes up on you, causing you to move forward.
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| Every piece of matter in the universe has some... | gravity
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| Gravity always pulls toward the ____ of an object | center
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| What 3 things do weight come from? | Our mass, Earth's mass, and gravity
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| Gravity | The force of attraction between objects that is due to their masses.
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| Gravitational Constant | 9.8 m/s2
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| Weight | the gravitational force between an object and Earth
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| Center of Mass | point where all the mass of an objects is concentrated
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| Galileo Galilei | Italian scientist who formulated laws of falling objects (gravity)
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| Force Formula | force equals mass times acceleration
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| Mass Formula | mass equals force over acceleration
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| Acceleration Formula | acceleration equals force times mass
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| Everything in the universe is in... | motion
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| What puts things in motion? | force
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| When an object is moving it keeps moving unless acted upon by an ____ ____ | outside force
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| Whether an object is moving or sitting still, everything has ______ | inertia
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| Gravitational force is also called ______ | weight
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| Weight is a ____ | force (N)
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| Mass is.. | the amount of matter in an object (kg)
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| Centripetal Force | for exerted toward the center of the circle that keeps on object moving in a circular motion
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| Terminal Velocity | reached when the force of gravity is equal to the air resistance
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| Force | push or pull exerted on an object in oder to change its motion
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| Net Force | combination of all of the forces acting on an object
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| Balanced Forces | 2 or more forces whose effects cancel each other out and do not change the motion of an object
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| Unbalanced Forces | 2 or more forces acting on an object that don't cancel and cause the object to accelerate
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| Sir Isaac Newton | English scientist/mathematician who studied and explained the 3 laws of motion
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| Friction | force that occurs when one surface rubs against another
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| What can work into heat? | friction
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| Knots are held together by what? | friction
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| Where is there almost no friction? | outer space
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| What do sliding and static friction have in common? | They both stop objects from moving or keep an object at rest.
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| What factors cause static friction between two surfaces to increase? | microscopic roughness and mass
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| What is the difference between sliding and static friction? | Static friction keeps an object at rest while sliding friction slows an object that slides
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| When was Isaac Newton born? | In England; Christmas Day 1642- March 30, 1726
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| What mathematics did Newton create? | calculus
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| Newton's published book was called.... | Principia Mathematica
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Created by:
Jenna7