Chapter 4: Dynamics Flashcards
1
Q
Force
A
Push or Pull
2
Q
Mass
A
Amount of matter/substance in a body
3
Q
Inertia
A
Definition: reluctance of an object to change its state of rest or motion
Factors: Mass (Larger mass, larger inertia)
4
Q
Weight
A
Force acting on mass due to gravitational pull by another body
5
Q
Newton’s First Law
A
When the forces acting on an object are balanced, there is no change on the object’s velocity.
6
Q
Newton’s Second Law
A
When the forces acting on an object are unbalanced, there is a change in object’s velocity
7
Q
Newton’s Third Law
A
When two objects interact, a force acts on each of the objects
8
Q
Factors affecting air resistance
A
Speed, surface area/size, density/viscosity
