Kinematic Equations
Kinematics formulas are about objects in motion and their interrelationship. These formulas are only accurate if acceleration is constant during a time interval and it assumes all variables are in the same direction. The following four equations describe the object in motion.
Kinematic Equations formulas |
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\(\large{ v_f = v_i + a \; t }\) \(\large{ d = \left( \frac{ v_f \;+\; v_i }{ 2 } \right) \; t }\) \(\large{ d = v_i \;t + \frac{ 1 }{ 2 } a \; t^2 }\) \(\large{ v_f^2 = v_i + 2 \; a \; d }\) |
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Symbol | English | Metric |
\(\large{ s }\) = displacement | \(\large{ft}\) | \(\large{m}\) |
\(\large{a}\) = constant acceleration | \(\large{\frac{ft}{sec^2}}\) | \(\large{\frac{m}{s^2}}\) |
\(\large{t}\) = travel time | \(\large{sec}\) | \(\large{s}\) |
\(\large{v_f}\) = final velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |
\(\large{v_i}\) = initial velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |