Physics solver
Physics, with
the units carried.
Physics marks are lost in three places: the formula chosen, the units, and the sign. Solvecoon writes all three out. It states which principle applies, keeps units attached at every substitution, and says what a negative result physically means.
Free to try — 5 solves every day. No credit card.
How it works
Snap the problem and its diagram
Force diagrams, circuits, and ray diagrams carry information the text does not.
Watch the set-up
Knowns listed, unknown named, formula chosen, and why that formula fits this situation.
Check the units
The final line states the units and whether the size of the answer is physically sensible.
What it handles
Kinematics
The suvat equations, projectile motion, and graphs of displacement, velocity, and acceleration.
Forces
Newton's laws, friction, inclines, tension, and free-body diagrams.
Energy and momentum
Work, kinetic and potential energy, power, conservation, and collisions.
Circuits
Ohm's law, series and parallel resistance, power dissipation, and Kirchhoff's rules.
Waves and optics
Frequency, wavelength, the wave equation, reflection, refraction, and lenses.
Thermodynamics
Specific heat, phase change, the gas laws, and the first law.
A real one, worked out
This is the shape of every answer: the result first, then the reasoning that got there.
Question
A 1200 kg car accelerates from rest to 24 m/s in 8.0 s. Find the net force on it.
Answer
3600 N in the direction of motion
Steps
- 1List the knowns: m = 1200 kg, initial v = 0 m/s, final v = 24 m/s, t = 8.0 s.
- 2Acceleration is the change in velocity over time: a = (24 - 0) / 8.0 = 3.0 m/s squared.
- 3Newton's second law: F = ma.
- 4Substitute with units: F = 1200 kg x 3.0 m/s squared = 3600 kg m/s squared.
- 5One kg m/s squared is one newton, so F = 3600 N, pointing the way the car is moving.
This is the net force, not the force from the engine. Drag and friction are part of the same total.
If your answer has no units, it is not an answer yet.
What it will not do
- It will not be used during a physics test or a proctored exam.
- It will not guess a value the question did not give, including g. It uses 9.8 m/s squared and says so.
- It will not read a force diagram that is outside your selection box.
- It will not do your lab report. It will explain what your data suggests.
Solvecoon is a study aid, not an answer machine. Exams, graded quizzes, and proctored tests are off limits — see the acceptable use policy.
Questions people ask
- Does it use g = 9.8 or 9.81?
- It uses 9.8 m/s squared by default and states it in the working. Ask for 9.81 or 10 if your course uses one of those and it will rework the numbers.
- Can it handle vectors?
- Yes. It resolves into components, keeps the signs consistent with the axes it declares, and recombines at the end.
- Will it explain why a formula applies?
- Yes, that is the first step of every physics answer: which principle is being used and what makes this situation fit it.
- What about significant figures?
- It rounds to the significant figures the question gives and shows the unrounded value first so you can round differently.
Stuck on something?
Select it or snap it — Solvecoon understands it.
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