Forces Flashcards
What are forces?
A force is a push or pull applied to one object by anoter object.
How do forces affect objects around us?
Forces can change the shape, dircetion, and speed of an object.
What type of force doesn’t require objects to be touching?
Non-contact forces.
Forces that require objects to be toutching is called….
Contact forces
What makes the forces on an object balanced?
When the two forces acting on an object are the same strength, and even eachother out.
A force on an object is not able to…
Change its mass or weight.
If the only two forces acting on an object are the same size but acting in opposite directions, the object …
Is balanced, and therefore stationary.
Can gravity change the mass of an object?
No, but it can change the weight.
Is buoyancy a non-contact force?
No
What are some ways to reduce friction?
Make surfaces smoother, lubrication, streamlining, reduce contact between surfaces, roll objects instead of sliding, use fluids, etc.
Is magenetism a non-contact force?
Yes.
Which two poles on a magnet attract?
Opposite poles attract. eg. North and south or south and north.
