momentum
The measure of the difficulty to bring a moving body to a halt.
The momentum of the body is equal to the product of the mass and the velocity of that body:
p = mv (where p and v are vectors)
Where (SI units used):
p is the momentum in Newton seconds (Ns or sec Newtons, sN)
m is the mass of the body in kilograms (kg)
v is the velocity of the body in metres per second (ms^-1)
The momentum of the body is equal to the product of the mass and the velocity of that body:
p = mv (where p and v are vectors)
Where (SI units used):
p is the momentum in Newton seconds (Ns or sec Newtons, sN)
m is the mass of the body in kilograms (kg)
v is the velocity of the body in metres per second (ms^-1)
1. A truck coming towards you at 100 ms^-1 will be hard to stop with your body because it has a lot of momentum.
2. A tenis ball thrown at you at .5 ms^-1 will be pretty easy to stop with your face because it has little momentum.
2. A tenis ball thrown at you at .5 ms^-1 will be pretty easy to stop with your face because it has little momentum.
momentum by White Razor December 15, 2008
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