Forces Flashcards
Force
A push or pull caused by one object interacting with another
What do unbalanced forces have an affect on?
An object’s motion or speed
What is force measured in?
Newtons
Contact force
A force that occurs as a result of two objects making contact with eachother
Non-contact force
A force applied to an object by another body not in direct contact with it
3 examples of a contact force
Weight, tension, normal contact force, friction
3 examples of a non-contact force
Upthrust, air resistance, magnetic
Formula for weight
Weight= mass x gravitational field strength
What does weight mean?
The force of gravity pulling an object towards the ground
What does work done against frictional forces result in?
Energy being transferred to the thermal store of objects in a system
How do you work out a resultant force from two forces?
Subtract the magnitude of the smaller force by that of the larger force