In which situation(s) is unbalanced forces being applied?
Situation A
Situation B
Situation C
Situation D
Friction moves in _______________.
the opposite direction of motion.
the same direction as motion.
a direction toward an object.
a downward direction.
Gravity moves in _____________.
In which situation(s) is balanced forces being applied?
What is rolling friction?
When round objects roll across a flat floor and both the object and floor are bent slightly out of shape.
Air resistance acted on in both gases and liquids.
A force that acts on objects that are NOT MOVING and is ALWAYS OPPOSING movement
It is harder to start something moving, then to keep something moving that is already in motion (sliding friction).
What is static friction?
A force that acts on objects that are not moving and is always opposing movement.
What is fluid friction?
What is sliding friction?
Order of resistance of motion (most to least): ____________________________________.
Rolling, Fluid, Sliding, Static
Fluid, Rolling, Static, Sliding
Static, Rolling, Sliding, Fluid
Static, Sliding, Rolling, Fluid
Force is a scaler quantity only measuring magnitude and not direction.
What does Newton's 1st Law state?
An object in motion tends to stay in motion but an object at rest tends to stay at rest.
Force = mass · acceleration
For every action, there is an equal but opposite reaction.
What does Newton's 3rd Law state?
What does Newton's 2nd Law state?
Which of Newton's three laws apply? When you put a book on a table and the table pushes on the book.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
Which of Newton's three laws apply? A person is pushed forward into their seat belt when a car stops.
Which of Newton's three laws apply? A larger car takes more force to move than a smaller one.
Which of Newton's three laws apply? A person leans on a wall and the wall pushes back.
Which of Newton's three laws apply? A brick sits on a table until you push on it
What is the difference between mass and weight?
Mass is heavier than weight.
Weight is mass but still including gravity.
Mass is weight and scaler is a vector.
No difference
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?
-9.43
-64.86
-448.28
-9.42
According to Newton's 2nd Law, objects that have ___________ are ________ to push than _______ objects. The ______ force, the ______ acceleration.
... a greater mass ... harder ... lighter ... more ... more ...
... a greater mass ... easier ... lighter ... less ... less ...
... a lighter mass ... easier... heavier ... more ... more ...
... a lighter mass ... harder... heavier ... more ... more ...
... a lighter mass ... harder... heavier ... less ... more ...
... a greater mass ... easier ... lighter ... less ... more ...
How do sprinklers apply Newton's 3rd law of Motion? Choose the BEST answer.
The greater the mass of the sprinkler, the harder it is for the sprinkler to turn.
The sprinkler stays in motion unless you turn it off to make it at rest.
Sprinklers spray out water, causing the sprinkler to move in the opposite direction in the shape of a circle.
The lesser the mass of the sprinkler, the harder it is for the sprinkler to turn.
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?
23 Newtons
39 Newtons
0 Newtons
1 Newton
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