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What is an Acceleration Calculator?

The Acceleration Calculator is a digital tool designed specifically for calculating acceleration in mechanics physics. Acceleration (a) is the rate of change of velocity with respect to time: a = (v - u) / t, where v is the final velocity, u is the initial velocity, and t is the time. In physics, uniformly accelerated motion (UAM) has constant acceleration, while uniform linear motion (ULM) has zero acceleration (constant velocity). This calculator also supports the formula without time: vt² = v₀² + 2as (s = distance traveled). This calculator is very useful for high school students studying kinematics in physics, as well as engineering students and physics teachers needing quick acceleration calculations.

Acceleration and UAM Formula

a = (v - u) / t (Acceleration = Δv / Δt)Formula: vt² = v₀² + 2as (Formula without time) | s = v₀t + ½at²

Variables:

  • aAcceleration
    Rate of change of velocity(e.g.: a = 2 m/s²)
    💡 Determining object acceleration
  • v / vtFinal Velocity
    Velocity after time t(e.g.: v = 20 m/s)
    💡 Calculating final velocity
  • u / v₀Initial Velocity
    Starting velocity(e.g.: u = 5 m/s)
    💡 Initial motion condition
  • tTime
    Time interval of velocity change(e.g.: t = 10 s)
    💡 Determining duration
  • sDisplacement
    Distance traveled by the object(e.g.: s = 100 m)
    💡 Calculating distance

Categories:

UAM (a constant ≠ 0)a constant, velocity changes
ULM (a = 0)a=0, velocity constant
Speeding Up (a > 0)Velocity increases
Slowing Down (a < 0)Velocity decreases

How to Use the KalkuLab Acceleration Calculator

Using the KalkuLab acceleration calculator is very easy. Follow these simple steps:

  1. 1

    Select Calculation Mode

    Choose what to find: Acceleration (a), Final Velocity (vt), Distance (s), or vt² = v₀² + 2as.

  2. 2

    Enter Known Values

    Enter values for your mode. For acceleration: v, u, t. For final velocity: u, a, t. For distance: u, t, a.

  3. 3

    Press Calculate

    Press Calculate to get results with step-by-step solutions.

  4. 4

    View Results and Explanation

    Results show the formula used (e.g., a = (v-u)/t) with full working.

  5. 5

    Use Reset

    Press Reset to try other uniform acceleration scenarios.

💡 Tip:

  • •Use consistent units: v (m/s), t (s), a (m/s²), s (m)
  • •Use negative sign (-) for deceleration (negative acceleration)
  • •Uniform motion: a = 0, use s = v × t
  • •vt² = v₀² + 2as works when time is unknown
  • •On a v-t graph, slope equals acceleration

Examples

Example 1: Car Acceleration from Rest

Problem:

A car starts from rest (u=0) and reaches 20 m/s in 5 seconds. What is its acceleration?

Solution:
  1. 1.Mode: a = (v-u)/t
  2. 2.u = 0, v = 20 m/s, t = 5 s
  3. 3.a = 20/5 = 4 m/s²
Result:a = 4 m/s²

The car accelerates at 4 m/s² — speed increases 4 m/s every second.

Example 2: Braking Deceleration

Problem:

A car at 20 m/s brakes to a stop in 4 seconds. What is the deceleration?

Solution:
  1. 1.a = (0 - 20)/4 = -5 m/s²
Result:a = -5 m/s²

Deceleration of 5 m/s² (negative sign indicates slowing down).

Frequently Asked Questions

What is acceleration?
Acceleration is the rate of change of velocity: a = (v - u)/t. Positive acceleration means speeding up; negative means slowing down.
What is uniform acceleration (GLBB)?
GLBB (Gerak Lurus Berubah Beraturan) means motion in a straight line with constant acceleration. All kinematic equations apply.
What is the difference between speed and velocity?
Speed is a scalar (magnitude only). Velocity is a vector (magnitude and direction). Acceleration depends on velocity change, including direction.
When do I use vt² = v₀² + 2as?
Use this when time is unknown but initial velocity, acceleration, and displacement are known. Common in free-fall problems.
Is the KalkuLab Acceleration Calculator free?
Yes, completely free. Open KalkuLab in your browser anytime without registration.

Related Calculators

Velocity Calculator

Speed and velocity calculations

Momentum Calculator

p = mv

Energy Calculator

Kinetic and potential energy

Force Calculator

F = ma

References