1st Law
When forces are balanced an object at rest or in motion...
What is "continues at rest or in motion"?
The relationship between mass and acceleration
What is FORCE?
For every action there is an equal but opposite...
What is "reaction"?
The amount of matter in an object.
What is MASS?
A push or a pull on an object.
What is a FORCE?
When forces are unbalanced an object at rest or in motion does this.
What is "changes velocity"?
The acceleration on an object with 2N-> and a mass of 4kg.
What is 0.5m/s2?
In a volleyball serve... the ball moving towards the opposite court is the reaction... this is the "action".
What is "the servers arm hitting the ball"?
Equal forces acting on an object in opposite directions
What are BALANCED FORCES?
Forces that do not cancel each other out, and cause a change in the motion of an object
What are UNBALANCED FORCES?
When an object has greater mass it has more of this.
What is "INERTIA"?
The mass of an object falling with an acceleration of -10m/s^2 and a force of 150N.
What is 15kg?
A swinging bat hits a baseball...
This is the "action force".
What is the force of the bat swing?
Speed in a given (specific) direction
What is VELOCITY?
A change in speed or direction
What is ACCELERATION?
Between these objects: a pencil, a soccer ball, a piano: this one has the greatest inertia.
What is the "piano"?
Newton's 2nd law of motion explains the relationship between.
What are Force, Mass, and Accelertion?
A lime sized hail stone lands on a trampoline. This is the 1st reaction force.
What is the trampoline bending down?
The tendency of an object to resist a change in motion
What is INERTIA?
A force of attraction between objects that is due to their masses.
What is GRAVITY?
The letter Y below has balanced or unbalanced forces acting upon it.
2N--> Y <--5N
What is "unbalanced"?
Doubling the force applied to a ball would affect the ball’s acceleration by...
Mass stays the same.
What is "doubling the acceleration"?
The amount of force that a tree pushes on a car if a car smashed into the tree with a 80,000N of force, and the tree doesn’t move.
What is -80,000N?
A force that opposes motion between two surfaces that are in contact
What is FRICTION?
The sum of all forces acting on an object
What is NET FORCE?