Dynamics 1.3 Flashcards
1
Q
What is Newtons first law?
A
An object will stay in a state of uniform motion in a straight line unless a force acts on it
2
Q
What is Newton’s second law?
A
Resultant force=mass x acceleration
3
Q
What is Newton’s third law?
A
If object A exerts a force on object B, object B will exert an equal and opposite force on object A
4
Q
What is the principle of the conservation of momentum?
A
The vector sum of momenta stays constant as long as there is no external force
5
Q
What is an elastic collision?
A
A collision where there is no change in kinetic energy
6
Q
What is an inelastic condition?
A
A collision in which kinetic energy is lost
7
Q
What is Newton’s second law in terms of momentum?
A
The resultant force is directly proportional to the change in momentum/time taken
