Speed/Velocity
How do you calculate speed?
Distance divided by Time
(Distance and time)
What is net force?
The overall force acting on an object.
Magnets have how many poles?
2 (North and South)
How many Laws did Newton come up with.
Three
What are the two mechanical energy types?
Potential and Kinetic
What is the difference between Speed and Velocity
Velocity has a direction
Velocity is speed with a direction
A force overcoming another force causing motion.
An object going in motion.
What part of the atom dictates the attraction and repulsive strength?
Electrons
What is the definition of Inertia
An objects resistance to change.
An objects wanting to stay the same.
What two things effect potential energy?
Mass and Height (Distance)
What is acceleration?
Change in Speed over Time
How do we calculate the net force acting upon that object? (2 parts)
We subtract forces acting in opposite directions.
We add forces acting in similar directions.
How will I know if something will attract to each other instead of repel?
Opposites charges
Which of Newton’s laws is best represented by throwing a ball at a wall and seeing how far it bounces back?
Newton's 3rd law (Action/Reaction)
In what Unit of measure do we measure energy in?
Joules
On a distance time graph, how do we represent and object that is not moving.
With a horizontal line.
What is the diagram called that represents objects and the net forces?
Free Body Diagram
What two forces are combined to create Electromagnetism?
Electric and magnetic forces.
Which of Newton’s laws is best represented by a boy trying to see how far he can kick a soccer ball, a tennis ball, and a bowling ball using the same amount of force?
Newton's Second Law
Where on the a roller coaster do we have the most Kinetic Energy?
How do we indicate the the object has changed directions on a distance vs time graph?
The classes are playing tug of war. Mr. Larson’s homeroom pulls with a force of 75 N. Mrs. Sundeen’s homeroom pulls with a force of 93 N in the opposite direction. What is the net force? And who won?
Mrs. Sundeen,
18N
Electric charges that do not move through a current are known as what?
Static Electricity
Name all three of Newton's Laws
Law of Inertia- Objects at rest or in motion will stay that way unless acted upon by another force.
Law of Acceleration- An objects acceleration is due to its mass and force acting on it.
Law of Action/Reaction- For every action there is an equal and opposite reaction
If you have two objects with different masses about to fall from the same height, which one will have the greatest potential energy?
The one with larger mass