In kinemetics, i learnt that as long as you have three unknowns, you can solve the problem. If you know the distance, d; time, t; and final velocity, vf; you can figure out vi.
average velocity = total distance / total time
so d/t = (vi+vf)/2
2d/t = vi + vf
(2d/t) - vf = vi
hope this helped .good luck
Remember that this only works if the acceleration is constant.
-Manvith N
In general case, that cannot be calculated - the velocity during movement is unknown according to data.
It might be calculated only for simple cases, like for example constant acceleration during movement.
If we're considering constant - but unknown - acceleration during movement:
Distance traveled will be:
S = vstartt + at2 / 2,
and final velocity:
vfinal = vstart + at
Substituting second equation into first, we get:
S = (vfinal - at)t + at2 / 2, which is
S = vfinalt - at2/2.
Let's solve for a:
a = 2 * (vfinal / t - S / t2).
Given acceleration, we can calculate vstart:
vstart = vfinal - at
initial velocity is the speed or the velocity at which vechicle or any other objects starts moving.....
This can't be done with just final velocity and time. You need to know the acceleration. If you do know the acceleration, multiply it by the time, and subtract that from the final velocity.
The equation is simple Vi=vf-at
To find acceleration you subtract initial velocity from final velocity and divide it by time.
initial velocity is the velocity with which a particle starts its journey.
That may vary, depending on the initial velocity and mass.That may vary, depending on the initial velocity and mass.That may vary, depending on the initial velocity and mass.That may vary, depending on the initial velocity and mass.
Average acceleration = final velocity - initial velocity/ final time - initial timeOr for short:Aave=Vf-Vi/Tf-TiHope that helps :)
You use the information you're given, along with the equations and formulas you know that express some kind of relationship between the information you're given and the initial and final velocity.
the formula for finding acceleration is final velocity, minus initial velocity, all over time. So if you have the acceleration and initial speed, which is equal to the initial velocity, you must also have time in order to find the final velocity. Once you have the time, you multiply it by the acceleration. That product gives you the difference of the final velocity and initial velocity, so then you just add the initial velocity to the product to find the final velocity.
Kinematics. Final velocity squared = initial velocity squared + 2(gravitational acceleration)(displacement)
Yes.
To find acceleration you subtract initial velocity from final velocity and divide it by time.
The final velocity is (the initial velocity) plus (the acceleration multiplied by the time).
v = 2s/t - u where u=initial velocity, v=final velocity, s = distance and t = time
You subtract the initial velocity from the final velocity and divide by the time interval.
If the velocity is uniform, then the final velocity and the initial velocity are the same. Perhaps you meant to say uniform acceleration. In any event, the question needs to be stated more precisely.
You cannot.
Without distance, you have to know time, initial velocity, and acceleration, in order to find final velocity.
Use the formula Acceleration = (final velosity - initial velocity)/ time.
You can't. You need either the final velocity or the acceleration of the object as well, and then you can substitute the known values into a kinematics equation to get the initial velocity.