3.1, 3.3 Momentum, Conservation

Mass: s__ q__ measuring b__’s r__ to c__ m__

scalar quantity, body, resistance, changing motion

Weight: e__ of g__ f__ on a m__

effect, gravitational field, mass

Linear momentum: p__ of m__ x v__

product, mass, velocity

Force: r__ of c__ o_ m__

rate, change of momentum

Newton’s 1st law
> an o__ r__ at r__ or m__ at a c__ v__ unless a__ u__ by a r__ f__

obj remains, rest, moves, const velocity, acted upon, resultant force

Newton’s 2nd law
> r__ f__ of an o__ is p__ to r__ o_ c__ i_ m__ (i.e. F=ma=change p/t)

resultant force, obj, proportional, rate of change in momentum

Newton’s 3rd Law
> if 1 o__ e__ a f__ on a__, the 2nd obj e__ a f__ on the __st of e__ s__ & in the o__ d__

obj exerts, force, another, exerts, force, 1st, equal size, opp direction

Principle of conservation of momentum: t__ m__ of c__ s__ b__ c__ = t__ m__ of s__ a__

total momentum, closed system before collision, total momentum, system after

Elastic collisions
> both m__ & k__ e__ is conserved
> rel. s__ of a__ = rel speed of s__

momentum, kinetic energy, speed, approach, separation

Inelastic collisions
> only m__ conserved, some E_k is c__ to other forms

momentum, converted