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# Force

### Chapter 31

What is force causes a stationary object to accelerate
What famous scientist studied force Isaac Newton
What is the unit of force Newtons
magnetic forces cause attraction and repulsion
friction a force that opposes motion
lubricants are used to reduce friction
oil is a good lubricant
mass is the amount of matter in an object
Weight is the pull of gravity on an object
When roads are wet, what is reduced Friction
state hookes Law the extension of an elastic body is directly proportional the force causing the extension
to measure force usea a newton meter
deceleration measn to slow down
Voyager 1 space probe with no force acting on it
streamlining makes cars move with less resistance
friction slows down rain and hailstones
to calculate weight multiply the mass of an object in kilograms by 10
gravity on the moon is less than gravity on earth
force equals mass multiplied by acceleration
hooke's law the extension of a spiral spring is proportional to the applied force
Created by: PHealy

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