Frequently used equations in physics. appropriate for secondary school students and higher. mostly algebra based, some trig, some calculus, some fancy calculus. 9) ohms law formula: ohms law says that the current running through some conductor material is directly proportional to the potential difference between two endpoints of the conductor. v= i × r. where, electric current flowing through the conductor in amperes. the resistance of the material in ohms.
Equation of continuity: a 1v 1 = a 2v 2 v 1 v 2 bernoulli’s equation: p 1 2 ˆv 2 ˆgh= constant torricelli’s theorem: v e ux = p 2gh viscous force: f= a dv dx stoke’s law: f= 6ˇ rv f v poiseuilli’s equation: volume ow time = ˇpr4 8 l l r terminal velocity: v t= 2r2(ˆ˙ )g 9. V = v0 at [1] this is the first equation of motion. it's written like a polynomial — a constant term ( v0) followed by a first order term ( at ). since the highest order is 1, it's more correct to call it a linear function. the symbol v0 [vee nought] is called the initial velocity or the velocity a time t = 0. The kinematic equations are listed below. 1. v = v 0 a t. 2. Δ x = ( v v 0 2) t. 3. Δ x = v 0 t 1 2 a t 2. 4. v 2 = v 0 2 2 a Δ x. since the kinematic equations are only accurate if the acceleration is constant during the time interval considered, we have to be careful to not use them when the acceleration is changing. Physics key equations. close. contents contents. highlights. print. table of contents. quadratic formula: y = a x 2 b x c y = a x 2 b x c: positive.
The kinematic equations are listed below. 1. v = v 0 a t. 2. Δ x = ( v v 0 2) t. 3. Δ x = v 0 t 1 2 a t 2. 4. v 2 = v 0 2 2 a Δ x. since the kinematic equations are only accurate if the acceleration is constant during the time interval considered, we have to be careful to not use them when the acceleration is changing. Physics key equations. close. contents contents. highlights. print. table of contents. quadratic formula: y = a x 2 b x c y = a x 2 b x c: positive. (note: on many different equation sheets x is substituted by d for displacement) variables (mks unit) Δy or y : change in position or displacement (m) in the y axis Δv : change in velocity (m s) iy: initial y axis velocity (m s) v fy: final y axis velocity (m s) g : acceleration due to gravity (m s ). Main april22,2003 15:22 contents preface pagevii howtousethisbook1 1 units, constants, and conversions 3 1.1 introduction,3•1.2 siunits,4•1.3 physicalconstants,6 •1.4 convertingbetweenunits,10•1.5 dimensions,16.
(note: on many different equation sheets x is substituted by d for displacement) variables (mks unit) Δy or y : change in position or displacement (m) in the y axis Δv : change in velocity (m s) iy: initial y axis velocity (m s) v fy: final y axis velocity (m s) g : acceleration due to gravity (m s ). Main april22,2003 15:22 contents preface pagevii howtousethisbook1 1 units, constants, and conversions 3 1.1 introduction,3•1.2 siunits,4•1.3 physicalconstants,6 •1.4 convertingbetweenunits,10•1.5 dimensions,16.
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