Velocity Calculator
This velocity calculator uses the equation that the final velocity of an object is equal to its initial velocity added to its acceleration multiplied by time of travel. This calculator does assume constant acceleration during the time traveled.
How It Works
The velocity equation in these calculations:
Where:
- u = initial velocity
- v = final velocity
- a = acceleration
- t = time
This calculator can be used to find initial velocity, final velocity, acceleration, or time as long as three of the variables are known.
Use standard gravity, a = 9.80665 m/s², for equations involving the Earth’s gravitational force as the acceleration rate of an object.
Example Calculation
A car approaching a school zone slows down from 27 m/s to 9 m/s with constant acceleration -2 m/s².
How much time is required to slow down to final velocity?
Answer: We know initial velocity (u = 27), velocity (v = 9) and acceleration (a = -2)
We first need to solve the velocity equation for time (t):
Plugging in the known values we get:
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