Mechanics Flashcards
1
Q
What is the conservation of momentum?
A
Momentum before = Momentum After
2
Q
Give an example of the conservation of momentum.
A
Firing a gun. A low mass bullet travels in one direction, and the gun recoils using a small mass in the opposite direction
3
Q
What is impulse defined as?
A
The rate of change of momentum
4
Q
What two equations can be used to find impulse?
A
I = Ft
I = mv-mu
5
Q
How do you calculate impulse from a force-time graph?
A
Area underneath
6
Q
What is an elastic collision?
A
Kinetic energy is conserved before and after
7
Q
What is Newtons First Law?
A
Objects remain at rest/ constant velocity unless acted upon by a resultant force
8
Q
What is Newtons Second Law?
A
F = Ma
- Object will accelerate if a force is applied
9
Q
A
