click below
click below
Normal Size Small Size show me how
Force
Chapter 31
Question | Answer |
---|---|
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 |