Physical Science Flashcards
Define Force
A push or pull on an object
Define Weight
The force on an object due to gravity
Define the Law of Universal Gravitation
two particles attracted to each other multiplied by the mass of both objects divided by the square of the distance between them
Define Friction
a force that opposes motion between any surfaces that are touching
Define Gravity
a force of attraction between things that have mass
Define Newton
a unit of force that will accelerate one kilogram of mass one meter per second squared
What causes all motion?
Any kind of force causes motion
Give two examples of things that use elastic force to work
- A bungee cord 2. A rubber band
Be able to explain how friction occurs
It occurs when two surfaces are moving and contact with each other
How are friction and heat related?
Friction produces heat
List the four types of friction
- Static Friction 2. Sliding Friction 3. Rolling Friction 4. Fluid Friction
What are the two things that influence the strength of gravity?
mass and distance
Explain Static Friction
when they are resting on a surface
Explain Sliding Friction
when they are sliding on a surface
Explain Rolling Friction
when they are rolling over a surface
