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Basic Forces Questions
Acting Forces
Gravity
Free body diagrams
Friction
100
Contact and Action-at-a-Distance forces
What are the two categories that all forces can be placed in?
100
Gravity
A football is moving upwards toward its peak after having been booted by the punter. What force is acting on the ball?
100
Mass
Gravity acts on all objects that have ____.
100
With a box
How do you represent an object in a free body diagram?
100
4
How many types of friction are there?
200
A push or a pull on an object.
What is a force?
200
normal force and gravity
A boy is leaning against a wall in his classroom. Name all of the forces acting on the boy.
200
F grav
Force of gravity would be known as this on a FBD.
200
magnitude and direction
Force is a vector, which means it has both ____ and ____ that are represented by an arrow.
200
Rub together
Friction occurs when two surfaces do what?
300
Friction
Slippery substances like grease, are lubricants that reduce this force.
300
A object at rest will stay at rest and an object in motion will remain in motion unless acted on by an unbalanced force.
What is Newton's 1st law or Inertia?
300
The center of the earth
What specific location does the force of gravity come from?
300
Force
Each arrow on a FBD is labeled to show a type of ____.
300
Rolling
A person driving a car is an example of this type of friction.
400
Applied force
What type of force does F app stand for?
400
Newtons
What is the name of the units of force?
400
It has a lot of mass so it feels the earth's force of gravity less than we do.
Why doesn't the moon crash towards the earth's surface?
400
Downward
What direction will the force of gravity always be facing on a FBD?
400
Cement floor outside causes more friction because the surface is more grainy.
What encounters more friction- a box being pulled across a shiny wooden floor or a box being pulled across cement outside? Why?
500
Magnetic, Electrostatic or gravity
Name two Action-at-a Distance forces.
500
A force that acts in the opposite direction of motion. It slows things down.
What is friction.
500
The exact center of its mass
Where is an object's center of gravity?
500
True
True of false, it is possible for a free body diagram to show just one force acting on it in a certain situation?
500
Sliding friction
The strongest type of friction is?