Momentum Flashcards
Momentum Formula
p=mv
momentum= mass x volicity
How does mass velocity affect the momentum of an object
The greater the mass/ velocity = the greater the momentum
The linear momentum of a car, with a mass of 1000 kg, that is moving north at a speed of 20 m/s is ____ kg. m/s north.
2000kgm/s
Remember must be seconds and kg
What is the momentum of a bee that weighs 10 g and flies at 2 m/s?
How does this compare to a turtle that weighs 1 kg and moves at 0.05 m/s
0.01 kgm/s
0.05 kgm/s
Turtle has more momentum
Newton’s 3rd Law of Motion?
“For Every Action, There Is An Equal & Opposite Reaction”
-The force applied by an Object (A) on another Object (B), Object B exerts back an equal force in magnitude but opposite in direction
What is the Law of Conservation Momentum
in a closed system the total momentum before an event (collision/explosion) is equal to the total momentum after the event if there is no energy loss
What is elastic collision?
Objects separate after collision- all mommentum is transferred after collision
What is Inelastic Collision?
Truck (1000kg, 5 m/s, mommentum= 1000 kg m/s= 5000kg)
ball (m) rolls (u1= initial velocity) into ball (2)m bounces into each other (change shape) and then also rolls(v)
What type of collision and formula explanation?
INELASTIC COLLISON
m1u1+m2u2 = m1v1 + m2v2
When u2= 0 and v1 = v2 = v1
m1u1 = (m1+m2) V
2 balls roll into each other ball (m1) coming (u1) from the left and ball m2 coming from the right (u2)
What type of collision
ELASTICCOLLISION
m1u1 + m2u2
A bullet (30 g) is moving at 680 ms^-1. It hits a hanging wooden block (1.5 kg). The bullet embeds into the wooden block & they move together after the hit. Calculate their velocity after the hit
m1= 0.03 kg
u1= 680 ms^-1
m2= 1.5 kg
u2= 0
v1= v2 = v
