9.1 - Force & acceleration Flashcards
1
Q
what opposes push force
A
friction
2
Q
state Newton’s 1st law of motion
A
objects remain at rest/in uniform motion unless acted upon by an external force
3
Q
an object moving at a constant velocity
-what can the overall net forces be
A
- no forces acting on the object
- forces are balanced (resultant force = 0)
4
Q
Newtons 2nd law of motion
A
F = ma
5
Q
equation for weight
A
W = mg
(N) = (Kg) x (9.81 ms-2)
6
Q
when is an object in equilibrium
A
when the support force is equal & opposite to the objects weight
7
Q
what is the inertia of an object
A
a measurement from its mass = resistance to change motion
