Net Force
Which is an example of unit of force?
a. 10 N b. 10 n c. 10 mph
10 N - The N must be capitalized for Newtons
Name a contact force we have discussed in this unit?
Friction
An object at rest, will stay at rest, until what happens?
An unbalanced force acts upon it
Two bumper cars collide into each other and each car jolts backwards
Newton's third law
A push or a pull on an object
Force
Draw a picture of an object with a net force of 5N to the right
Images vary, must have net force of 5n
What causes a ball rolling across a rug to slow to a stop?
Friction opposes the balls motion
What is Newton's third law of motion?
For every action, there is an equal and opposite reaction
It is much easier to carry your backpack when it is empty rather than when it’s full of textbooks.
Newton's second law
Net Force
What will happen when a balanced force acts on a non-moving object
the object will remain motionless
How does friction affect the motion of a girl sliding down a slide?
It slows her down
What is the equation for Newton's 2nd law of motion?
F = M * A
A climber pulls down on a rope causing his body to lift upward and rise along the rope
Newton's Third Law
A force that opposes motion of a moving object
kinetic friction
Which direction would you draw a vector to represent the force of gravity acting on the block?
An arrow pointing downward
What force would need to be overcome in order to keep a heavy box sliding across the floor?
What is one thing that directly impacts the amount of inertia an object has?
The mass
A boy is going down a slide. As he reaches the bottom, friction causes him to slow down and stop.
Newton's first law
The force that resists the motion of an object that is at rest
Static Friction
When a rock sitting on a table is affected by an unbalanced force, what will happen to the rock?
A friction-like force that opposes the motion of an object in a fluid is called
Drag
Which Law states, the “acceleration of an object depends on the mass of the object and the amount of force applied?
Newton's 2nd Law
A smaller cannon ball leaves a cannon much faster than a larger, heavier cannon ball fired at the same time
Newton's second law
The tendency that an object will resist a change in motion
Inertia