physics : forces Flashcards
1
Q
formula for weight
A
weight = mass × gravitational field strength
2
Q
work done = ???
A
work done = force × distance
3
Q
what’s force?
A
spring constant x extension
4
Q
momentum of a force
A
moment of a force = force x distance
5
Q
what’s the formula for pressure
A
pressure =
force normal to a surface/area of that surface
6
Q
formula for speed
A
speed = distance / time
7
Q
acceleration =
A
acceleration =
change in velocity/time taken
=
final velocity-initial velocity/time taken
8
Q
resultant force =?
A
resultant force = mass x acceleration
9
Q
momentum = ????
A
- momentum = mass x velocity
