Newton's Second Law
A change in direction or speed causes
A change in the velocity of an object
Force is
A push or a pull
A change in the velocity of an object is called
Acceleration
If there is no gravitational force present,
An object would not have a weight
A force causes
An objects motion to change
Directly proportional means
Both variables do the same thing - either both increase or both decrease
Two ways an object's motion can be changed
Change its direction Change its speed
Acceleration is ______ proportional to Force
Directly - if force increases, acceleration increases - if force decreases, acceleration decreases
Unit that can be measured directly is called a
Fundamental Unit
Weight equation
Fw=mg Force of weight = mass x acceleration due to gravity
Acceleration is _____ proportional to Mass.
Inversely - if mass increases, acceleration decreases - if mass decreases, acceleration increases
Weight
Is a force that is affected by gravity
Mass
Is the amount of matter in an object Does not change with location of object (Earth vs. Moon)
Newton's Second Law other name
Law of Acceleration
SI Unit for force
Newton (N)
Acceleration of the object is in the ______ direction as the force that causes ___________.
Same Acceleration
Newton's Second Law states
The acceleration of an object is equal to the sum of the forces (net force) acting on the object, divided by the mass of the object.
Weight changes with
The location of an ibject
Inversely proportional means
The variables do the opposite thing - one increases and the other decreases
Newton's Second Law equation
a=Fnet/m Or Fnet=ma
Derived Unit for force
kg•m/(s^2) Force = mass (kg) x acceleration (m/(s^2))