593714
Questão 1
Responda
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Situation A
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Situation B
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Situation C
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Situation D
Questão 2
Questão
Friction moves in _______________.
Responda
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the opposite direction of motion.
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the same direction as motion.
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a direction toward an object.
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a downward direction.
Questão 3
Questão
Gravity moves in _____________.
Responda
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the opposite direction of motion.
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a direction toward an object.
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a downward direction.
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the same direction as motion.
Questão 4
Responda
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Situation A
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Situation B
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Situation C
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Situation D
Questão 5
Questão
What is rolling friction?
Responda
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When round objects roll across a flat floor and both the object and floor are bent slightly out of shape.
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Air resistance acted on in both gases and liquids.
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A force that acts on objects that are NOT MOVING and is ALWAYS OPPOSING movement
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It is harder to start something moving, then to keep something moving that is already in motion (sliding friction).
Questão 6
Questão
What is static friction?
Responda
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Air resistance acted on in both gases and liquids.
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A force that acts on objects that are not moving and is always opposing movement.
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It is harder to start something moving, then to keep something moving that is already in motion (sliding friction).
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When round objects roll across a flat floor and both the object and floor are bent slightly out of shape.
Questão 7
Questão
What is fluid friction?
Responda
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When round objects roll across a flat floor and both the object and floor are bent slightly out of shape.
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It is harder to start something moving, then to keep something moving that is already in motion (sliding friction).
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A force that acts on objects that are not moving and is always opposing movement.
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Air resistance acted on in both gases and liquids.
Questão 8
Questão
What is sliding friction?
Responda
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When round objects roll across a flat floor and both the object and floor are bent slightly out of shape.
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It is harder to start something moving, then to keep something moving that is already in motion (sliding friction).
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A force that acts on objects that are not moving and is always opposing movement.
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Air resistance acted on in both gases and liquids.
Questão 9
Questão
Order of resistance of motion (most to least): ____________________________________.
Responda
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Rolling, Fluid, Sliding, Static
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Fluid, Rolling, Static, Sliding
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Static, Rolling, Sliding, Fluid
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Static, Sliding, Rolling, Fluid
Questão 10
Questão
Force is a scaler quantity only measuring magnitude and not direction.
Responda
- True
- False
Questão 11
Questão
What does Newton's 1st Law state?
Responda
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An object in motion tends to stay in motion but an object at rest tends to stay at rest.
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Force = mass · acceleration
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For every action, there is an equal but opposite reaction.
Questão 12
Questão
What does Newton's 3rd Law state?
Responda
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For every action, there is an equal but opposite reaction.
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Force = mass · acceleration
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An object in motion tends to stay in motion but an object at rest tends to stay at rest.
Questão 13
Questão
What does Newton's 2nd Law state?
Responda
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An object in motion tends to stay in motion but an object at rest tends to stay at rest.
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Force = mass · acceleration
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For every action, there is an equal but opposite reaction.
Questão 14
Questão
Which of Newton's three laws apply? When you put a book on a table and the table pushes on the book.
Responda
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Newton's 1st Law
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Newton's 2nd Law
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Newton's 3rd Law
Questão 15
Questão
Which of Newton's three laws apply? A person is pushed forward into their seat belt when a car stops.
Responda
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Newton's 1st Law
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Newton's 2nd Law
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Newton's 3rd Law
Questão 16
Questão
Which of Newton's three laws apply? A larger car takes more force to move than a smaller one.
Responda
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Newton's 1st Law
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Newton's 2nd Law
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Newton's 3rd Law
Questão 17
Questão
Which of Newton's three laws apply? A person leans on a wall and the wall pushes back.
Responda
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Newton's 1st Law
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Newton's 2nd Law
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Newton's 3rd Law
Questão 18
Questão
Which of Newton's three laws apply? A brick sits on a table until you push on it
Responda
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Newton's 1st Law
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Newton's 2nd Law
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Newton's 3rd Law
Questão 19
Questão
What is the difference between mass and weight?
Responda
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Mass is heavier than weight.
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Weight is mass but still including gravity.
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Mass is weight and scaler is a vector.
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No difference
Questão 20
Questão
Assume that a catcher in a professional baseball game exerts a force of -65 newtons. If the baseball has a mass of 0.145, what is the baseball's acceleration as it is being caught?
Responda
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-9.43
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-64.86
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-448.28
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-9.42
Questão 21
Questão
According to Newton's 2nd Law, objects that have ___________ are ________ to push than _______ objects. The ______ force, the ______ acceleration.
Responda
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... a greater mass ... harder ... lighter ... more ... more ...
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... a greater mass ... easier ... lighter ... less ... less ...
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... a lighter mass ... easier... heavier ... more ... more ...
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... a lighter mass ... harder... heavier ... more ... more ...
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... a lighter mass ... harder... heavier ... less ... more ...
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... a greater mass ... easier ... lighter ... less ... more ...
Questão 22
Questão
How do sprinklers apply Newton's 3rd law of Motion? Choose the BEST answer.
Image:
sprinkle.gif (image/gif)
Responda
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The greater the mass of the sprinkler, the harder it is for the sprinkler to turn.
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The sprinkler stays in motion unless you turn it off to make it at rest.
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Sprinklers spray out water, causing the sprinkler to move in the opposite direction in the shape of a circle.
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The lesser the mass of the sprinkler, the harder it is for the sprinkler to turn.
Questão 23
Questão
A force pulls an object up 3 N, but gravity pulls the object 3 N as well. Applied force pulls the same object to the left 20 N, but friction pulls the object 19 N. What is the Net Force of the object?
Responda
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23 Newtons
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39 Newtons
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0 Newtons
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1 Newton
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