Forces Flashcards
What do you measure forces in?
Newtons
What do you use to measure forces?
Newton meter
What is a force?
A force is a push or a pull
What do you call forces that act in pairs?
Interation pairs
What is gravity?
a non-contact force that acts between two objects
What is weight?
The downward force caused by gravity acting upon the mass of an object
What is mass?
mass is the amount of matter within an object
how do you calculate weight?
mass (kg) x gravitational field strength (N/kg)
What is speed?
Speed is a measure of how quickly or slowly that something is moving
how do you measure speed?
meters per second
how do you calculate speed?
distance travelled (m) divided by time taken (s)
What is relative motion?
Relative motion compares how quickly one object is moving compared to another
What are contact forces?
Contact forces act when two objects are physically touching
What are non-contact forces?
non-contact forces act when two objects are physically separated (not touching)
