🚀 Mechanics & Motion

13 calculators in this category.

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Calculators for motion and forces: kinematics (speed, acceleration and the SUVAT equations), Newton's laws, momentum, gravity, circular motion, pressure, density and torque. Each one shows the formula and worked examples.

Speed, Distance & Time

Find speed, distance or time from the other two with speed = distance ÷ time. Gives speed in km/h and m/s and time in hours and minutes.

Calculate acceleration from initial velocity, final velocity and time with a = (v − u) ÷ t, plus the distance covered and the acceleration in g.

Equations of Motion

Solve the three equations of motion: v = u + at, s = ut + ½at² and v² = u² + 2as. Enter initial velocity, acceleration and time to get final velocity and displacement.

Newton's second law calculator: find force, mass or acceleration with F = ma. Also shows the force in kilogram-force.

Calculate linear momentum p = mv from mass and velocity, plus kinetic energy and the impulse needed to stop the object.

Weight on Planets

Find your weight on the Moon, Mars, Jupiter and other planets with W = mg. Shows the weight in newtons and what a bathroom scale would read.

Find how long an object takes to fall from a height and how fast it hits the ground, ignoring air resistance: t = √(2h/g) and v = √(2gh).

Projectile Motion

Find the range, maximum height and time of flight of a projectile launched from the ground at an angle, with its horizontal and vertical velocity components.

Centripetal Force

Calculate centripetal force F = mv²/r and centripetal acceleration for an object moving in a circle, plus its angular velocity and the time for one revolution.

Gravitational Force

Calculate the gravitational force between two masses with Newton's law of gravitation F = Gm₁m₂/r², and the gravitational field strength of the first mass at that distance.

Calculate pressure from force and area with P = F ÷ A. Results in pascals, kilopascals, bar, atmospheres and psi.

Find density, mass or volume with ρ = m ÷ V. Works in grams and cm³, and gives density in both g/cm³ and kg/m³.

Calculate torque, the turning effect of a force, with τ = r × F × sin θ. Enter the force, the distance from the pivot and the angle.