> #mathematics , #physics > when do we use v^2=u^2- 2as usually we use v^2=u^2+2as?
###### Anonymous
more than 3 weeks ago

# when do we use v^2=u^2- 2as usually we use v^2=u^2+2as?

when do we use v^2=u^2- 2as

usually we use v^2=u^2+2as
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more than 3 weeks ago
The equation v^2 = u^2 - 2as is typically used when the initial velocity (u), final velocity (v), acceleration (a), and displacement (s) are known, and we are solving for one of these variables. This equation is derived from the kinematic equation v^2 = u^2 + 2as by rearranging terms.

On the other hand, the equation v^2 = u^2 + 2as is used when the initial velocity (u), acceleration (a), and displacement (s) are known, and we are solving for the final velocity (v). This equation is one of the kinematic equations that relate the initial and final velocities, acceleration, and displacement of an object moving in a straight line.

Both equations are commonly used in physics to solve problems related to motion and dynamics.
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more than 3 weeks ago
We use v^2 = u^2 + 2as when the object is moving with acceleration in the same direction as its velocity, that is, the object is accelerating.

We use v^2 = u^2 - 2as when the object is moving with acceleration in the opposite direction to its velocity, that is, the object is decelerating or braking.
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