Momentum and Impulse
- Created by: louderthanbombzz
- Created on: 28-04-17 21:59
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Momentum is defined by the formula : P=mv
Momentum is always conserved, assuming there are no external forces acting on the objects before and after a collision.
This is the CONSERVATION OF MOMENTUM.
A skater of mass 75kg and velocity 4m/s collides with a stationary skater of mass 50kg and they join together, moving in the same direction. What's velocity after the impact?
m1u1+m2u2=m1v1+m2v2
m1= 75kg m2=50kg
u1= 4m/s u2= 0m/s
75*4= 300kgm/s 300kgm/s = 125v v=2.4m/s
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