7 Law Of Motion And Momentum Flashcards
Newton’s first law of motion
An object will remain in rest or continue to move with constant velocity unless acted upon by a resultant force
Newton’s third law of motion
When two objects interact they exert equal and opposite forces on each other
p = mv
Momentum = mass x velocity
Momentum base SI unit
kg m s^-1
The principle of conservation of momentum
For a system of interacting objects the total momentum in a specified direction remains constant
Name the two types of collision
Perfectly elastic and in elastic
What is the difference between perfectly elastic and inelasic collision
Kinetic energy is not conserved in an inelastic collision
What is the same between perfectly elastic and inelastic collisions
Linear momentum and total energy are conserved
Newton’s second law
The resultant force acting on an object is directly proportional to the rate of change of its momentum and is in the same direction
F = delta (mv) / delta t
Force = change in momentum / time
Impulse
The product of force and time (change in moment)
Base SI unit of impulse
kg m s^-1
Force time graph x axis
Time
Force time graph y axis
Force
Force time graph area under the graph
Impulse
What angle do identical balls move off with after colliding obliquely
90°
