Forces
Forces which work on contact are represented by this when being diagrammed
a solid arrow
An object that is speeding up is doing this.
Accelerating
Gravity is a downward force which means that it goes here on a FBD.
At the bottom
We use this word when two forces are applied in the same direction.
Reinforce
Roughly how many years ago did the dinosaurs get hit by an asteroid.
65 mya
Forces which work at a distance are represented by this when being diagrammed
a dashed arrow
Objects which are moving and in a state of equilibrium will move in this way.
In a straight line with a constant speed.
Free body diagrams do not include the forces an object applies to others for this reason.
The forces an object applies to others do not affect its motion.
We use this word when two forces are applied in opposite directions.
Counteract
Almost all geologic activity on earth is caused by this.
The movement of tectonic plates
We understand forces to act in one of these two directions.
Vertical or Horizontal
A sled is following a frictionless track. It goes down a hill through a flat area then up a hill. At which points in this process is it experiencing unbalanced forces.
On the downward and upward slopes.
If the net force applied to an object includes a vertical component upward and a horizontal component to the right which way will the object travel.
Up and to the right at an angle.
When describing the strength of the force we use this word.
Magnitude
What is the molecule that humans breathe in order to live.
O2
When a force is applied to an object it begins to do this in the direction of the force?
Accelerate
You arrive in class to see a motionless object floating in the air. What can you assume about the object.
All the forces on the object are balanced. (Equilibrium)
A free body diagram should include these things.
The forces applied to an object, a simple depiction of the object, and labels for the forces.
We measure forces with this unit derived from the name of a famous physicist.
Newtons
What are the first 5 digits of pi
3.1415
Two objects apply the same force of 25 newtons to one another. One of these objects has a mass of 10 grams while the other has a mass of 50 grams. Which object will have a greater acceleration.
The object with less mass
An object is traveling in a loop at a constant speed. Suddenly the loop is lifted, how will the objects motion change?
It will continue traveling in a straight line from where it was.
If ten forces are being applied to an object how many arrows should the free body diagram include?
Ten
This unit is used to measure mass and is equal to 1000 of its base unit.
Kilogram
Who wrote the famous equation E=MC2
Albert Einstein