Forces Flashcards
What’s a force?
Push or pull that occurs when two or more objects interact
Two types of forces:
Contact
Non contact
Non-contact forces
forces that can act on objects that are not touching
Contact forces
Can only act on objects that are touching
Contact forces
Tension
Friction
Air resistance
Non contact forces
Gravity
Magnetism
Electrostatic force
Newton meter/force meter
Used to measure force
Force is measured in
Newtons
Weight
Pull things down
Air resistance
Acts against anything moving through the air
Friction
Acts against anything moving
Upthrust
Keep things afloat
A force can change the…
Shape of an object or change it’s state the rest or motion
Resultant force
Sum of all the forces acting on an object
To calculate the resultant force
Subtract smaller with bigger force
When the resultant force of an object is 0…
Objects is stationary or the object is already moving then the object will continue to move at a constant speed and same direction
Unbalanced forces
When the resultant force on an object isn’t 0 the force acting on an object aren’t balanced
Movement depends on the size and direction of the resultant force
Change in velocity (m/s)
Acceleration (m/s squared) X time taken (s)
Speed(m/s)
Distance (m) X time(s)
Motion sensor
Linked to a computer
Used to measure velocity change
Displacement
Distance in a specific direction
