Machines and Conservation
Momentum-✔✔A vector quantity that has the same direction as the
velocity of the object.
Impulse-✔✔A vector quantity that has the same direction as the force.
m*v-✔✔Momentum’s formula.
F*t-✔✔Impulse’s formula.
equal-✔✔Momentum is ___ to Impulse.
Elastic Collision-✔✔When both momentum and kinetic energy are
conserved.
m1v1 + m2v2 = m1v1’ + m2v2’-✔✔Conservation of momentum and
energy.
½m1v1² + ½m2v2² = ½m1v1’² + ½m2v2’²-✔✔Conservation of kinetic
energy.
Inelastic collision-✔✔When either momentum/kinetic energy is not
conserved.
m1v1 + m2v2 = m(1+2) * v(final)-✔✔Conservation of momentum not
energy.
(m1v1)*cos0-✔✔Momentum of one afterwards
Potential energy-✔✔Stored energy, the gravitational one is due to the
position of an object above the Earth’s surface.
Kinetic energy-✔✔The energy of motion.
Momentum-✔✔A vector quantity that has the same direction as the
velocity of the object.
Impulse-✔✔A vector quantity that has the same direction as the force.
m*v-✔✔Momentum’s formula.
F*t-✔✔Impulse’s formula.
equal-✔✔Momentum is ___ to Impulse.
Elastic Collision-✔✔When both momentum and kinetic energy are
conserved.
m1v1 + m2v2 = m1v1’ + m2v2’-✔✔Conservation of momentum and
energy.
½m1v1² + ½m2v2² = ½m1v1’² + ½m2v2’²-✔✔Conservation of kinetic
energy.
Inelastic collision-✔✔When either momentum/kinetic energy is not
conserved.
m1v1 + m2v2 = m(1+2) * v(final)-✔✔Conservation of momentum not
energy.
(m1v1)*cos0-✔✔Momentum of one afterwards
Potential energy-✔✔Stored energy, the gravitational one is due to the
position of an object above the Earth’s surface.
Kinetic energy-✔✔The energy of motion.
