Week 4 Flashcards
1
Q
Newtons 1st law?
A
a object will remain at rest or in constant motion unless acted upon by external force
2
Q
inertia?
A
Object that will continue to stay still unless acted upon external force
3
Q
2nd law?
A
Acceleration is proportional to force and mass
4
Q
Momentum?
A
inertia when someone is moving mass velocity
5
Q
Impulse?
A
Measure of total amount of force of a certain time period
6
Q
3rd law?
A
For every action there is an equal & opposite reaction
7
Q
What is a force?
A
Push or pull & accelerates an object
8
Q
Internal forces?
A
Within object/system
9
Q
Do internal forces cause movement?
A
They don’t change in position of the body centre of mass
10
Q
Do external forces cause movement?
A
Yes when we produce an unbalanced force
11
Q
Free body diagram?
A
mechanical representation of all forces acting on a system
