forces Flashcards
1
Q
definition of weight
A
amount of gravitational force in an object
2
Q
si unit of force
A
newton(N)
3
Q
definition of mass
A
amount of matter in an object
4
Q
what are the contact forces
A
friction elastic and normal reaction
5
Q
what are the non-contact forces
A
magnetic and gravitational force
6
Q
formula of weight
A
w =mg
7
Q
what changes from a force
A
change motion
size
pressure
turning effects
8
Q
whats the si unit of energy and time
A
joule (J)
9
Q
how to find pressure
A
force over area
10
Q
si unit for mass
A
kg or g
