Physics · Kinematics
Kinematics Calculator
Solve kinematics problems step by step (constant velocity and constant acceleration). Includes Torricelli's equation for cases without time.
Open toolFree physics calculators for kinematics, Newton’s Laws, energy, thermology, electricity, waves, hydrostatics and buoyancy, with worked examples.
Physics with step-by-step solutions
Physics Tools for High School and University Entrance Exams
Free physics calculators for kinematics, Newton’s Laws, energy, thermology, electricity, waves, hydrostatics and buoyancy, with worked examples.
Physics · Dynamics
Newton's Laws Calculator
F = m·a, net force (vector) and inclined plane with friction. Free step-by-step solutions.
Open toolPhysics · Energy
Mechanical Energy Calculator
Kinetic, gravitational potential and elastic energy, energy conservation and work in a single tool.
Open toolPhysics · Thermodynamics
Temperature Converter
Convert Celsius, Fahrenheit, Kelvin, Rankine and Réaumur in real time, with reference temperatures.
Open toolPhysics · Electricity
Electric Circuits Calculator
Ohm's law, electric power and series and parallel resistor networks.
Open toolPhysics · Waves
Wave Calculator
Calculate speed, frequency, wavelength and period in wave problems.
Open toolPhysics · Thermology
Calorimetry Calculator
Sensible heat, latent heat and thermal equilibrium with step-by-step formulas.
Open toolPhysics · Thermology
Thermal Expansion Calculator
Linear, surface and volumetric expansion as a function of temperature change.
Open toolPhysics · Hydrostatics
Hydrostatics Calculator
Pressure, density and hydrostatic pressure in liquids with P = ρ·g·h.
Open toolPhysics · Hydrostatics
Buoyancy Calculator
Archimedes' principle, apparent weight and floating bodies in fluids.
Open tool10 of 10 tools
Articles and study paths
Use these routes as study guides. They connect theory, examples and related tools.
How to solve constant velocity and acceleration problems
Review position, velocity, acceleration and how to pick the right formula.
Newton’s Laws on an inclined plane
Understand net force, friction, weight and vector decomposition.
Calorimetry in exams
Compare sensible heat, latent heat and thermal equilibrium in common problems.
Electric circuits step by step
Use Ohm’s law, power and series and parallel resistor networks.
Solved exercises
Exercise 1
A body starts from rest with an acceleration of 2 m/s² for 5 s. What is its final velocity?
Use v = v₀ + a·t. Since v₀ = 0, v = 0 + 2·5 = 10 m/s.
Practice with the toolExercise 2
What is the net force on a 4 kg body with an acceleration of 3 m/s²?
By Newton’s Second Law, F = m·a = 4·3 = 12 N.
Practice with the toolExercise 3
A 10-ohm resistor carries a current of 2 A. What is the voltage?
By Ohm’s law, V = R·I = 10·2 = 20 V.
Practice with the toolCommon mistakes in Physics
- Mixing km/h and m/s without converting the units.
- Confusing mass, measured in kg, with weight, measured in newtons.
- Using Celsius in formulas that require absolute temperature in Kelvin.
- Adding resistors in parallel as if they were in series.
Recommended pairings
To study better, follow these pairs of tools: