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Engineering Spring 2012 Welcome Copyright © 2012 Little Engineers of Florida
Engineering Spring 2012 Copyright © 2012 Little Engineers of Florida F = m a Work = force * distance Energy = force * distance Potential Energy = m *g * h Kinetic Energy = ½ m v 2
Engineering Spring 2012 Copyright © 2012 Little Engineers of Florida PE = mgh KE = ½ m v 2 Conservation of Energy PE = mgh = ½ m v 2 = KE
Engineering Spring 2012 Copyright © 2012 Little Engineers of Florida PE = mgh KE = ½ m v 2 S = S 0 + V 0 t + ½ a t 2 1 sec @ 9.8 m/s 2 = 5m m * 9.8 * 5 = ½ m v 2 9.8 * 5 = ½ v 2 v = SQRT (2 * 9.8 * 5) v = 9.899 m/s
Engineering Spring 2012 Copyright © 2012 Little Engineers of Florida weight = m*g *(r/s) 2 r = radius of earth s = distance above earth Energy = m*g *(r/s) 2 * ds
Engineering Spring 2012 Copyright © 2012 Little Engineers of Florida weight = m*g *(r/s) 2 r = radius of earth s = distance above earth Energy = m*g *(r/s) 2 * ds So Total Energy to get in space, PE in space = g * m * r PE = KE g * m * r = ½ m v 2 S sound = 340 m/s, EV = 33 * S sound
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