2006-08-22 14:43:27 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Physics
how do u get delta x,t
2006-08-22 15:15:21 · update #1
As just about everyone has correctly said, "delta," a Greek letter, typically stands for a change in (whatever the variable is). One of the more useful uses of delta x and delta t is to calculate velocity in the x direction.
For example:
If you start on a footpath (x) at your house (x = 0) and walk to the outhouse a hundred feet away (x = 100 ft), then delta x = (100 - 0) = 100 ft. Also if you started your walk at t = 0 and got to the outhouse at time t = 2 min, then delta t = (2 - 0) = 2 min. Velocity is defined as delta x/delta t; so your average velocity along the path (v) = (100 - 0)/(2 - 0) = 100 ft/2 min = 50 ft/min
So what would your velocity be back to the house if it took 4 minutes? Well, now here's one of the features of velocity (as opposed to speed), velocity has direction. In the outhouse case, v = delta x/delta t = (0 - 100)/(4 - 0) = -100/4 = -25 ft/min
Notice the minus (-); that signifies going in the opposite direction to get back to the house from the direction you went to get to the outhouse. That minus sign is the direction metric. The speed of that velocity is the 25 ft/sec. Direction plus speed equals velocity.
By definition acceleration = a = delta v/delta t; where delta v = (v1 - v0); so if you started from your house at zero velocity, v0 = 0.If you ended up at the outhouse running at 100 ft/min, v1 = 100. We know it took 2 min. to get to the outhouse; so a = delta v/delta t = (v1 - v0)/(t1 - t0) = (100 ft/min)/(2 min) = 50 ft per min min.
And now you know how to do acceleration, which also has direction, like velocity. Decceleration, slowing down, would have a minus sign. Acceleration is very important to physics, consider F = ma; whre the a is acceleration of mass (m) in the direction of the force F. Thus, delta is very important to physics.
2006-08-22 16:23:38 · answer #1 · answered by oldprof 7 · 4⤊ 0⤋
Delta V Delta T
2016-11-02 23:43:54 · answer #2 · answered by ? 4 · 0⤊ 0⤋
I always thought the little triangle or delta symbol represented the change in something. Delta t would represent the change in t which is usually time. Delta x would repsent the change in x but not sure what x means, would have to see the full equation.
2006-08-22 15:08:14 · answer #3 · answered by quntmphys238 6 · 0⤊ 0⤋
Delta anything is usually the change. delta x is change in position, probably horizontal. delta t is change in time.
dx/dt could also be the derivative of function f(x) with respect to t.
2006-08-22 14:57:07 · answer #4 · answered by davidosterberg1 6 · 0⤊ 0⤋
delta t means change in time
delta x means change in the variable on the x-axis
2006-08-22 15:00:00 · answer #5 · answered by Mama R 5 · 0⤊ 0⤋
Delta x =-6.69 and xi=3.09 what is xf
2017-01-27 13:35:23 · answer #6 · answered by ehabyoussef1968 1 · 0⤊ 0⤋
delta x is normally change or difference in position.
delta t is normally change or difference in time.
2006-08-22 14:50:45 · answer #7 · answered by F. Frederick Skitty 7 · 1⤊ 0⤋
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Symbols can have many different meanings. If you see an equation or list one, it should have the definitions of each symbol near it. Otherwise the equation is meaningless.
2016-04-06 07:02:07 · answer #8 · answered by Anonymous · 0⤊ 0⤋
delta x in physics is the small vallue of x and delta t in physics is the small value of t.
It is tending to zero and is not equal to zero.
2006-08-22 14:48:58 · answer #9 · answered by Pearlsawme 7 · 0⤊ 3⤋
I'm curious as well
2016-07-27 11:12:08 · answer #10 · answered by Anonymous · 0⤊ 0⤋