I fought the law and the law won!
How many laws of motion are there, and who discovered them?
Newton's 3 laws of motion
What causes an object to move/change motion?
An unbalanced force.
What is a force?
Double: What are the two broad categories of forces?
An interaction between two objects.
Double: Contact and non-contact
On a distance vs time graph, what does a horizontal line mean?
The object is at rest (distance is not changing)
What is the difference between a scalar and a vector value?
Scalars have only magnitude, vectors have magnitude and direction.
The law that explains an object's resistance to changes in its motion.
Newton's first law of motion.
The acceleration of an object depends on this:
Mass and net force
Forces act in pairs. Provide the opposite force for the following forces: Gravity and applied force.
Normal force (would accept buoyant force) and friction.
On a velocity vs time graph, a horizontal line means what?
The object is traveling at constant velocity. (acceleration is zero m/s2)
What three factors affect a magnet's strength?
Double: What causes magnetism?
Orientation (opposite poles aligned), strength of charge, and distance.
Double: Unbalanced electrons
The law that clearly explains why a smaller object would require less force to change its motion compared to a larger object in the same scenario.
Newton's second law of motion.
The term that refers to an object's resistance to change in motion.
Inertia
What is the force of a 20 kg cannonball accelerating at 5 m/s2?
100 N
On a velocity vs. time graph, what does constant acceleration look like?
A straight sloped line.
Name the four types of friction.
Double: What can be used to reduce this?
Static, sliding, rolling, and fluid.
Double: Lubricant
The law that clearly explains why an object pushing one way will be propelled in the opposite direction.
Newton's third law.
This is the sum of all forces acting on an object.
Double: What is the value of it with a stationary object?
Net force
Zero newtons
Name three non-contact forces.
Gravity, magnetic, and electric force.
What does (+) vs (-) mean when dealing with velocity?
The direction the object is moving (forward vs. backward).
Draw a vector of heading north with 2 Newtons and a vector heading east with 1 Newton of force.
An arrow pointing up that is twice as long as an arrow pointing right.
What acronym helps us remember the order of Newton's laws?
Double Points: Explain it.
I ACed REAding
Inertia 1st, ACceleration 2nd, REAction 3rd
An object is being pushed in multiple directions with the following forces: 5 N west, 10 N north, 10 N east, and 5 N south. What direction will the object move?
North East
The unit of force is this. (Name, symbol, and unit)
N is for Newton (kg * m/ s2)
On a distance vs time graph, what does a curved line mean?
Double: Draw and explain the three examples.
Acceleration
1) Curve up (+ and increasing), 2) curve right (deceleration, - or decreasing), 3) curve down (- direction and increasing)
Gravity is affected by these two factors.
What is mass and distance?