An object's change in position overtime relative to a reference point.
What is motion?
100
A push or pull exerted on an object in order to change the motion of the object; force has size and direction.
What is force?
100
A force that opposes motion between two surfaces that are in contact.
What is friction?
100
Gravity is the force of attraction between objects that is due to their masses.
What is gravity?
100
Isaac Newton.
Who discovered gravity?
200
Acceleration is expressed in meters/second
Time is expressed in seconds or min/second/second.
What are units of acceleration?
200
The combination of all of the forces acting on an object.
What is net force?
200
Kinectic friction & Static friction.
What is the two different types of friction?
200
The law of universal gravitation is the following:All objects in the universe attract each other other through gravitational force.
What is the Law Of Universal Gravitation ?
200
Isaac Newton said, "Why do objects fall toward Earth?" and, "What keeps the planets moving in the sky?"
What are the two questions Isaac Newton asked?
300
Speed = Distance/Time or s = d/t
Velocity = the change in distance/change in time.
How do you measure speed and motion?
300
Balanced and Unbalanced forces.
What are the two types of forces?
300
The difference between weight and mass is that weight is a measure of the gravitational force on an object and mass is the amount of matter in an object
What is the difference between Weight and Mass?
400
A force direction + another force direction = the total force of an object in the same direction.
What is the equation for net force?
400
The SI unit for force.
What is a newton?
500
0 N
What is the net force of an object when both balanced and unbalanced?
500
It applies to all of the objects in the universe.
Why is the law of universal gravitation called universal?