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Momentum is a vector quantity: it has both magnitude and direction.Since momentum has a direction, it can be used to predict the resulting direction and speed of motion of objects after they collide.
The moment of force, or torque, is a first moment: =, or, more generally, .; Similarly, angular momentum is the 1st moment of momentum: =.Momentum itself is not a moment.; The electric dipole moment is also a 1st moment: = for two opposite point charges or () for a distributed charge with charge density ().
The magnetic moment can be defined as a vector (really pseudovector) relating the aligning torque on the object from an externally applied magnetic field to the field vector itself. The relationship is given by: [ 1 ] τ = m × B {\displaystyle {\boldsymbol {\tau }}=\mathbf {m} \times \mathbf {B} } where τ is the torque acting on the dipole, B ...
Therefore, although determining the recoiling energy that must be dissipated through a counter-recoiling force is arrived at by conservation of momentum, kinetic energy of recoil is what is actually being restrained and dissipated. The ballistics analyst discovers this recoil kinetic energy through analysis of projectile momentum.
Likewise, the momentum vector is the velocity vector (a polar vector) times mass (a scalar), so is a polar vector. Angular momentum is the cross product of a displacement (a polar vector) and momentum (a polar vector), and is therefore a pseudovector. Torque is angular momentum (a pseudovector) divided by time (a scalar), so is also a pseudovector.
President-Elect Trump's agenda for his first 100 days in the White House is in jeopardy due to narrow GOP majorities in the House and Senate, and the loss of congressional Republican support for ...
First, momentum might've stayed with The Brutalist all along; the lengthy drama landed big wins at the Globes ... actually has a potential surprise or two brewing underneath.
This push gained momentum after the 2020 murder of George Floyd, as politicians and social activists pressed companies to do their part in confronting systemic racism.