MOON'S WORLD
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Unbalanced Forces lab
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Whirly Durly Lab
Content
Unit 1- Kinematics
Unit 2- Forces
Unit 3-circular motion
Unit 4- Energy
Unit 5- Momentum
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Unit 1
Physics of Something
Types of Collisions
Elastic
K conserved
objects move in opposite directions after collision
eg. 2 bouncy balls
Inelastic
K not conserved
eg. bullet penetrating a wall
Totally inelastic
K not conserved
objects stay together and move in same direction after collision
eg. 2 sticky balls
Impulse
effect of force on object over a period of time
change in momentum
area under F/t curve
J (impulse) = Favg * delta t
J = pf - pi
Momentum
anything that moves has momentum
p (momentum) = m*v
momentum bar chart (LIL)
1st L- initial momentum
I- change in momentum
2nd L- final momentum
use blocks to show relative change in momentum
Conservation of Momentum
momentum is always conserved no matter elastic/inelastic event
pi = pf
For multiple objects
Elastic- m1v + m2v = m1vf + m2vf
Inelastic- m1v + m2v = (m1 + m2) vf
Center of Mass = assuming the center of all masses in a system of objects
p of center of mass = Mv
Relating momentum, energy, forces and kinematics
K is ONLY conserved in elastic collisions
pi + J = pf
F = ma = m(delta v/t) = J/t
when problem solving, always remember to state which KIND OF COLLISION you are dealing with so you can use the right equations
Home
Labs
Unit 1
>
Buggy Lab
Cart on a Ramp Lab
Cart on Ramp Lab
Unit 2
>
Unbalanced Forces lab
Unit 3
>
Whirly Durly Lab
Content
Unit 1- Kinematics
Unit 2- Forces
Unit 3-circular motion
Unit 4- Energy
Unit 5- Momentum
About
Contact
Unit 1
Physics of Something