Physics Equations

# Physics Equations - 1 mile = 1609 m Period = 1 frequency T...

This preview shows pages 1–2. Sign up to view the full content.

1 mile = 1609 m Period = 1 / frequency T = 1 / f and f = 1 / T Frequency = number of cycles per time Period = time for one cycle 1 Hz = 1/s = 1 s^-1 Velocity/Acceleration Avg. Speed = total distance / total elapsed time instantaneous time=very short distance / very short time Velocity= change in distance / change in time ( d final – d initial / t final – t initial) Velocity is a vector (Pythagorean) Acceleration = change in velocity / change in time (final speed – initial speed/ change in time) G = 9.8 m/s^2 Centripetal acceleration = v^2 / r a proportional to v^2 velocity inversely proportional to r Constant velocity d = v t Object that starts from rest w/ constant acceleration v = at Slope = change in v / change in t = a Average velocity = (0 + at)/2 distance traveled = 1/2 at x t d = 1/2 at^2 (a constant) If starting w/ velocity v(average) = v(initial) + at/2 d = v(initial)t + at^2 / 2 Force 1 N = .225 lb 1 lb=4.45 N F = ma Weight = mg centripetal force = mv^2/ r Springs k = F/ d * Newton 3 rd law F(B on A) = -F(A on B) Force on two bodys = Gm1*m2 / d^2 G = 6.67x10^-11 N-m^2 / kg^2 g=GM/Radius^2 Linear momentum = mv net exterman force acting on an object= change in momentum(mv)/change in time total mv before = total mv after (in a collision) Two carts w/ spring on 1 v1 / v2 = - m2 / m1 because mv(after) is 0 b/c mv(before) is 0 (they both aren’t moving). Work F on left end/ F on right end = d right end moves / d left end moves Work= Fd 1 joule = 1 newton-meter Work done by gravity = Wd = mgd Constant acceleration = work = Fd = ma * 1/2 at^2 = 1/2m * a^2 * t^2= 1/2m *(at)^2

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 04/07/2008 for the course ECON 201 taught by Professor Williams during the Fall '08 term at UVA.

### Page1 / 2

Physics Equations - 1 mile = 1609 m Period = 1 frequency T...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online