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35 Cards in this Set
- Front
- Back
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What is the ability to do work?
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energy
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What is the amount of matter in an object?
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mass
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What is a fixed unmoving object or location?
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reference point
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What's the change in an object's position?
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motion
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What is determined by an object's imass and velocity?
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momentum
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The resistance to change in motion is called?
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inertia
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What occurs when an object speeds up, slows down or changes direction?
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acceleration
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A push or pull that causes an object ot change speed or direction?
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force
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What keeps an object from moving against other objects?
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friction
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If John increades his speed, passed the runner and won the race what is that called?
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acceleration
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If John's coach started timing John's run and at 8 min. John had run 1 mile & at 15 min. he had drun 2 miles what is that called?
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distance
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What if McKenna normally runs 7.3mi/hr.? what is that called?
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speed
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What do you call it when on the day of the race, Parker ran along the track toward the east at 7.4 mi/hr.
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velocity
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If the runner in the front of the race all of a sudden stumbled over a rock. His speed slowed down. what is this called>
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acceleration
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Is force measured in joules?
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no
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Does a block and tackle contain only movable pulleys?
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no
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What kind of machine is door nob an example of?
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wheel and axle
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The spot where the lever turns is called what?
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a fulcrum
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The _______ force works against the effort?
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resistance
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Does a simple machine contain more than one machine to make it work easier?
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no
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Is a slide an example of a pulley or inclined plane?
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inclined plane
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A _____ is used to measure work.
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joule
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The decrease in effort that is needed to move an object is called ______ advantage.
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mechanical
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Which machines makes work easier by either changing the direction of the force or by reducing the amount of force needed to move an object?
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pulley
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The machine that consists 2 inclined planes placed back to back
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wedge
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Mechanical Advantage is the ____ in effort tha is needed to move an object.
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decrease
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A _____ is a machine with a bar that turns on a point.
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lever
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If a rocket is launched, excpelling gases downward to the ground, causing the rocket to move upward which of Newton's law explains it?
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Law #3
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If you are skating and hit a rock and then you fall when you hit it, which of Newton's laws is that?
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Law#1
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If it takes only one person to pick up a box filled with cotton balls and 2 people to pick up the same size box filled with rocks which law does that reflect?
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Law #2
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Name the scientist that formulated the 3 laws of motion?
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Sir Issac Newton
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Gravity keeps what from happening?
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it keeps an object from moving indefinitely in a straight line
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How does friction affect motion?
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It keeps objects from moving against other objects. Friction works against inertia and helps us to walk.
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Does Jesus love you?
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Yes
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What is a machine that is really an inclined plane wound around a cylinder or cone?
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a screw
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