Physics peoples' laws etc

YOU'LL NEVER GUESS NEWTON'S LAWS OF MOTION ***THE THIRD ONE WILL SURPRISE YOU*** [SHOCKING]

Newton’s 1st law

INERTIA - an object will remain at rest or continue to move with a constant velocity unless acted on by a force.

Newton’s 2nd law

the resultant force acting on an object is directly proportional to the rate of change of its momentum (acting in the same direction)

Newton’s 3rd law

FORCE PAIRS - when two objects interact, they exert equal and opposite forces on each other

Impulse =

force x time (= change in momentum)

N2L F =

change in p/ change in t

Kirchhoff’s 1st law

for any point in an electrical circuit, the sum of currents into a point is equal to the sum of currents out of that

Kirchhoff’s 2nd law

Around any closed loop in the circuit, the sum of the emfs equals the sum of the pds

e =

elementary charge (1.60×10^-19 C)

potential difference

work done BY charge carriers/ energy transferred FROM electrical energy TO another form

electromotive force (emf)

work done ON charge carriers/ energy transferred FROM an energy source TO electrical energy

Ohm’s law

for metals at constant temperature, the current through the wire is directly proportional to the potential difference across it