Forces Flashcards
1
Q
What is a force?
A
Push or pull acting on a body
2
Q
What is the different between mass and weight?
A
- Mass - total amount of matter in an object
- Weight - measure of force of gravity on an object
3
Q
What are 4 external forces?
A
- Ground reaction forces
- Gravitational forces
- Impact/collision forces
- Friction forces
4
Q
Describe Newton’s First Law
A
Law of Inertia - Object/body will remain at rest or in uniform motion unless acted upon by an external force
5
Q
Describe Newton’s Second Law
A
- Law of Acceleration - F=ma
- Acceleration of an object is proportional to the resultant force of the object and inversely proportional to its mass
6
Q
Describe Newton’s Third Law
A
Law of Action/Reaction - For every action, there is an equal and opposite reaction
