physics what if we locked in

SI Units

meter, kilogram, second, ampere, mole, kelvin, candela

Vector

Quantities that have magnitude and direction

Vector quantities

displacement, velocity, acceleration, force

Scalar

Quantities that no direction

Scalar quantities

Speed, coefficients of friction

Vector addition

Tip to tail

Pythagorean theorem

Vector subtraction

Change the direction of the subtracted vector then following vector addition

Vector multiplication

Changes the magnitude and may reverse the direction

Dot product result

Scalar quantity

Dot product

Product of the vectors’ magnitudes and the cosine of the angle between them

Cross product result

Vector quantity

Cross product

Product of of the vectors’ magnitudes and the sine of the angle between them, direction determined by right hand