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Can the effect of initial velocity on final velocity be predicted?
Well, (final velocity) = (initial velocity) + (acceleration x time)
What is the effect of changig length or mass of pendulum on value of g?
Changing the length will increase its period. Changing the mass will have no effect.
What is 3-D effect?
if three coordinates are sufficient to express the position of motion is called 3d effect
What is a travel multiplier?
The travel multiplier measures the effect of the initial tourism spending and the chain of spending that follows.
Help An object is thrown straight down from the top of a 300ft building with an initial velocity of -20 feet per second What is its velocity after 2 seconds and what it velocity after falling 150ft?
Given that dv/dt = a, you can take the integral of a, and get...vt = a t + C. Substitute v0 for C, and you get vt = a t + v0Assuming that the acceleration due to gravity is about -32 fps2, then the velocity after 2 seconds of an object down with an initial velocity of -20 fps is -80 fps.To solve the second part of the question, "what is the velocity after falling 150 f?", you need to integrate again, and get...xt = 1/2 a t2 + v0 t + C. Substitute x0 for C, and you get xt = 1/2 a t2 + v0 t + x0Solve for t, with xt = 150, (300-150), v0 = -20, and x0 = 300, using the quadratic equation, and you get t = 2.28 s. (You also get t = -1.03 s, but you can ignore that because it is the solution for time prior to the release point.)Go back to the first integral and plug in t = 2.28 s, and you get v = 92.9 fps.This answer assumes no resistance from velocity in air. At 92.9 fps, you might get some effect, depending on the shape and density of the object, so the real answer is less than stated.
