Acceleration by Distance

Calculator and formulas for calculating acceleration by distance

Acceleration Calculator

Kinematics with constant acceleration

Calculates the relationship between acceleration (a), initial velocity (v₀), final velocity (v) and distance (s).

Result
Acceleration:
Initial velocity:
Final velocity:
Distance:

Example Calculation

Example: Car acceleration
Problem:

A car accelerates from 0 km/h to 100 km/h and covers a distance of 200 m. What is the average acceleration?

Given:
  • Initial velocity v₀ = 0 km/h = 0 m/s
  • Final velocity v = 100 km/h = 27.78 m/s
  • Distance s = 200 m
  • Find: Acceleration a
Solution:

1. Conversion km/h → m/s:

\[v = 100 \text{ km/h} = \frac{100}{3.6} = 27.78 \text{ m/s}\]

2. Calculate acceleration:

\[a = \frac{v^2 - v_0^2}{2s}\]
\[a = \frac{(27.78)^2 - 0^2}{2 \times 200}\]
\[a = \frac{771.5}{400} = 1.93 \text{ m/s}^2\]
Practical applications
Automotive engineering: Acceleration testing, braking distance calculation
Traffic safety: Accident reconstruction, speed analysis
Mechanical engineering: Conveyor systems, elevators, production lines
Kinematic fundamentals

Important: These formulas only apply for constant acceleration. In reality, acceleration often varies, so these are usually average values over the considered distance.

Formulas for acceleration

These formulas are based on the kinematic equations for uniformly accelerated motion. They connect acceleration, velocities and distance traveled.

Calculate acceleration

Calculation of acceleration from initial, final velocity and distance.

\[a = \frac{v^2 - v_0^2}{2s}\]
a = Acceleration [m/s²]
v = Final velocity [m/s]
v₀ = Initial velocity [m/s]
s = Distance [m]
Calculate initial velocity

Calculation of initial velocity with known final velocity.

\[v_0 = \sqrt{v^2 - 2as}\]
Rearrangement of the basic formula for initial velocity.
Calculate final velocity

Calculation of final velocity after a certain distance.

\[v = \sqrt{v_0^2 + 2as}\]
Commonly used form for acceleration processes.
Calculate distance

Calculation of distance traveled with known velocities.

\[s = \frac{v^2 - v_0^2}{2a}\]
Useful for braking and acceleration distances.
Important notes
  • These formulas only apply for constant acceleration
  • For braking processes, acceleration is negative (deceleration)
  • Units must be used consistently (SI units recommended)
  • The formulas are based on the conservation of energy and kinematics

Detailed description of acceleration

Physical Fundamentals

Acceleration describes the change in velocity per unit of time. With constant acceleration, we can use the kinematic equations to calculate relationships between velocity, time, distance and acceleration.

These special formulas use energy considerations, since kinetic energy is proportional to the square of velocity.

Usage Instructions

Select with the radio buttons which quantity should be calculated. Enter the known values and choose the appropriate units.

Application Areas

Automotive Engineering

Acceleration testing, braking distance calculation, performance diagrams. Foundation for vehicle dynamics and safety systems.

Traffic Safety

Accident reconstruction, speed analysis, traffic planning. Important for forensic investigations.

Mechanical Engineering

Conveyor systems, elevators, production lines, robotics. Dimensioning of drives and safety systems.

Understanding acceleration

Acceleration is present everywhere in our daily life. The most important concepts and their practical significance:

Positive acceleration

a > 0
Velocity increases
Car when starting

Negative acceleration

a < 0 (deceleration)
Velocity decreases
Car when braking

Uniform motion

a = 0
Velocity constant
Car at constant speed

Example: A sports car with 400 HP can accelerate from 0 to 100 km/h in about 4 seconds. This corresponds to an acceleration of about 7 m/s², almost 0.7 times the acceleration due to gravity!


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