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In Newtonian mechanics, momentum (pl.: momenta or momentums; more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction.
angular momentum. Also (rarely) moment of momentum or rotational momentum. The rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity–that is, the total angular momentum of a closed system remains constant. angular velocity (ω)
As it rolls the ball will pick up more snow, gaining more mass and surface area, and picking up even more snow and momentum as it rolls along. In aerospace engineering, it is used to describe the multiplication effect in an original weight saving. A reduction in the weight of the fuselage will require less lift, meaning the wings can be smaller.
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4 Ways To Gain Momentum With Your Retirement Savings, According to Suze Orman. Vance Cariaga. November 22, 2024 at 9:00 AM. Prostock-Studio / Getty Images/iStockphoto.
The following derivation is for a body that is gaining mass . A body of time-varying mass m moves at a velocity v at an initial time t. In the same instant, a particle of mass dm moves with velocity u with respect to ground. The initial momentum can be written as [5]
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The application of Newton's second law for variable mass allows impulse and momentum to be used as analysis tools for jet- or rocket-propelled vehicles. In the case of rockets, the impulse imparted can be normalized by unit of propellant expended, to create a performance parameter, specific impulse .