5.1 Newton Flashcards
What is a force
Force is an action exerted on an object that may change the state, rest or motion of an object. Could be push or pull
Force is a vector. True or false
True since it has magnitude and direction
Contact force
Involves a force between two objects in contact, like friction
None-contact force
Involves a force between objects not touching, like magnetic
Mass
Stays the same
Measured with balance
Measured in Kilograms, KG
Cant be zero
Weight
Changes with gravity force
Measured with spring scale
Measured in Newtons
Can be zero
Tension
A force caused by a rope or string.
Newton’s first law
Objects don’t start or stop moving on their own
Newton’s first law is also called:
The law of inertia
Newton’s third law
when you push or pull something, it pushes or pulls back with the same force in the opposite direction.