Forces and Motion Flashcards
1
Q
What is Newton’s first law?
A
a body will continue in its state of rest or uniform motion, in a straight line unless a net or resultant force acts upon it.
2
Q
What is Newton’s Second Law?
A
Force = mass x acceleration or force = change in momentum/time
3
Q
What is inertia?
A
The force required to initiate or terminate motion.
4
Q
What is Newton’s Third Law?
A
Whenever two objects interact, the forces they exert on each other are equal and opposite.
5
Q
How do you work out weight (N)?
A
Weight (N) = mass (kg) x gravitational field strength (N/KG)
6
Q
What is the conservation of momentum?
A
As long as no external forces are acting on the objects involved, the total momentum stays the same in explosions and collisions
7
Q
1 Kg is how many N
A
1 Kg = 10N
