Physics Chapter 2 Flashcards
1
Q
State the linear law of conservation of momentum
A
- No external force/isolated system
2. Total momentum will not change
2
Q
State Newton’s first law of motion
A
An object at rest stays at rest and an object in motion stays in motion with constant velocity unless acted upon by an unbalanced force.
3
Q
State Newton’s second law of motion
A
Acceleration is proportional to net force and inversely proportional to mass.
4
Q
State Newton’s third law of motion.
A
Every action force has an equal and opposite reaction force
5
Q
Define Impulse
A
Impulse = Fdelta t where delta t is the time for which the force causes a change in momentum
6
Q
Equations for Power?
A
Power = Energy / Time P = Fv
7
Q
State two factors that affect the frictional force between surfaces in contact
A
- Frictional constant
2. Normal force
