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How do you find work given mass initial velocity and final velocity?
Wiki User
∙ 13y ago
We assume you mean the work done in order to change the velocity of the moving mass.
Easiest way is to calculate the change in the kinetic energy of the moving mass, and realize
that it's equal to the amount of work either put into the motion of the mass or taken out of it.
Initial kinetic energy = 1/2 m Vi2
Final kinetic energy = 1/2 m Vf2
Change in kinetic energy = 1/2 m ( Vf2 - Vi2) <== that's the amount of work involved.
If the final velocity is greater than the initial velocity, the change in kinetic energy is positive,
and represents work done by the pusher to speed up the mass.
If the final velocity is less than the initial velocity, the change in kinetic energy is negative, and
represents work done by the mass and absorbed by the pusher, as the mass slowed down.
Wiki User
∙ 13y ago
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How do you find a final velocity without distance but given time?
Without distance, you have to know time, initial velocity, and acceleration, in order to find final velocity.
How do you find acceleration with velocity given?
Use the formula Acceleration = (final velosity - initial velocity)/ time.
What is the formula for calculating final velocity when you know the initial speed and the acceleration?
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.
How do you find final Velocity of an object?
The final velocity is (the initial velocity) plus (the acceleration multiplied by the time).
How do you find the initial velocity given only the distance and the time traveled?
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.
How do you find a final velocity without distance but given time?
Without distance, you have to know time, initial velocity, and acceleration, in order to find final velocity.
How do you find the final velocity given only distancetimeand initial velocity?
v = 2s/t - u where u=initial velocity, v=final velocity, s = distance and t = time
How do you find acceleration with velocity given?
Use the formula Acceleration = (final velosity - initial velocity)/ time.
How do you find final and initial velocity?
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.
What is the formula for calculating final velocity when you know the initial speed and the acceleration?
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.
How do you find final Velocity of an object?
The final velocity is (the initial velocity) plus (the acceleration multiplied by the time).
How do you find the initial velocity given only the distance and the time traveled?
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.
How do you find displacement when you only have acceleration initial velocity and final velocity?
Kinematics. Final velocity squared = initial velocity squared + 2(gravitational acceleration)(displacement)
How do you find the time given only the distance and the initial and final velocity?
Average speed = 1/2 (initial speed + final speed) Time = (distance)/(average speed)
When calculating acceleration to find the change in velocity you subtract the what velocity from the final velocity?
You subtract the initial velocity from the final velocity and divide by the time interval.
When calculating acceleration to find the change in velocity do you subtract the initial velocity from the final velocity?
Yes.
How do you find initial acceleration.?
The initial acceleration of an object can be found by calculating the change in velocity over time. This can be done by dividing the final velocity by the time taken to reach that velocity. The formula for initial acceleration is: initial acceleration = (final velocity - initial velocity) / time.
