Acceleration Calculator
Calculate acceleration from initial velocity, final velocity, and time.
Also computes distance traveled during acceleration.
Acceleration
Acceleration is the rate of change of velocity over time.
a = (v_f - v_i) / t
Where:
- a = acceleration (m/s² or ft/s²)
- v_f = final velocity
- v_i = initial velocity
- t = time
Related equations:
Distance = v_i × t + ½ × a × t²v_f² = v_i² + 2 × a × d
Reference accelerations:
- Earth’s gravity (g): 9.81 m/s² (32.2 ft/s²)
- Car braking (hard): -8 to -10 m/s²
- Car acceleration (typical): 2–4 m/s²
- Sprinter start: ~5 m/s²
- Fighter jet: ~90 m/s² (9g)
- Roller coaster max: ~40 m/s² (4g)
Negative acceleration (deceleration) means the object is slowing down. The calculator handles both acceleration and deceleration.