Formula Used:
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This formula calculates the initial velocity of a particle undergoing uniformly accelerated linear motion, given its final velocity, acceleration, and displacement. It's derived from the standard equations of motion.
The calculator uses the formula:
Where:
Explanation: This formula is derived from the kinematic equation \( v_f^2 = u^2 + 2ad \), rearranged to solve for initial velocity \( u \).
Details: Calculating initial velocity is essential in physics and engineering for analyzing motion, predicting trajectories, and understanding the behavior of moving objects under constant acceleration.
Tips: Enter final velocity in m/s, acceleration in m/s², and displacement in meters. All values must be valid (non-negative for velocity and displacement).
Q1: What if the value under the square root is negative?
A: A negative value indicates that the given combination of parameters is not physically possible for real motion.
Q2: Does this formula work for deceleration?
A: Yes, acceleration can be negative (deceleration) in this formula.
Q3: What are the units for each variable?
A: All velocities are in m/s, acceleration in m/s², and displacement in meters.
Q4: Can this be used for non-uniform acceleration?
A: No, this formula only applies to motion with constant (uniform) acceleration.
Q5: What's the difference between velocity and speed?
A: Velocity is a vector quantity (magnitude and direction), while speed is a scalar (magnitude only). This formula calculates velocity.