QuizePhysics Solver with Steps
A free AI physics solver that shows its work. Type, paste or snap a photo of any motion, force, energy or circuit problem, diagram included, and see every formula and unit. Then solve the next one yourself.
- 10free answers a day
- Everyformula and unit shown
- APand college physics
Updated
Solve a physics question
Type it, paste it, or upload a photo. You get the answer, every step, and the idea behind it.
What is a physics solver?
A physics solver works out physics problems and explains each step. QuizeGpt is an AI physics solver that goes further: it lists what you know, picks the equation that fits, and keeps the units on every line. You learn how to set up the problem, not just the number.
- Type a problem, paste a screenshot, or snap a photo with the diagram.
- Get the answer with the formula, each step and the units, in plain words.
- Ask a follow-up if a step doesn't make sense.
What the physics problem solver can do
From your first motion problem to circuits and waves, here's what this physics homework solver handles, and how it explains each one.
| Physics topic | What you get |
|---|---|
| Kinematics | Lists the knowns, picks the right motion equation, and solves with units. |
| Projectile motion | Splits the motion into x and y, finds the time, then the range or height. |
| Newton's laws and forces | Draws the free-body diagram in words and sums the forces. |
| Friction and inclines | Finds the normal force, friction and the net force along the slope. |
| Work, energy and power | Uses the work-energy theorem or energy conservation, step by step. |
| Momentum and collisions | Conserves momentum and tells elastic and sticky collisions apart. |
| Circular motion and gravity | Centripetal force, orbits and Newton's law of gravity. |
| Electricity and circuits | Ohm's law, series and parallel resistors, power and charge. |
| Waves, sound and light | Wave speed, frequency, reflection, refraction and lenses. |
Physics solver with steps: worked examples
This is what you get. Each step names the law and keeps the units.
A ball is thrown sideways at 12 m/s off a 20 m cliff. How far from the base does it land?
- Vertical: it starts with v_y = 0, so 20 = ½(9.8)t². That gives t = 2.02 s.
- Horizontal: speed stays 12 m/s the whole time.
- x = 12 m/s × 2.02 s = 24.2 m
Answer: About 24.2 m
You pull a 10 kg box with 50 N across a floor. The friction coefficient is 0.2. Find the acceleration.
- Normal force: 10 kg × 9.8 m/s² = 98 N. Friction: 0.2 × 98 = 19.6 N.
- Net force: 50 − 19.6 = 30.4 N.
- Newton's second law: a = 30.4 N ÷ 10 kg
Answer: a = 3.04 m/s²
A 4 Ω and a 6 Ω resistor are in series with a 12 V battery. What is the current?
- In series, resistances add: 4 + 6 = 10 Ω.
- Ohm's law: I = V ÷ R.
- I = 12 V ÷ 10 Ω
Answer: I = 1.2 A
A 2 kg cart at 3 m/s hits a 1 kg cart at rest. They stick together. How fast do they move?
- Momentum before: 2 kg × 3 m/s + 1 kg × 0 = 6 kg·m/s.
- They stick, so the mass after is 2 + 1 = 3 kg.
- Momentum is conserved: v = 6 ÷ 3
Answer: v = 2 m/s
Try it without signing in
Pick a sample problem, then drag a box over it to snap it, just like the Chrome extension does on your homework page.
A cyclist speeds up from 2 m/s to 10 m/s in 4 s. What is the acceleration?
- 2 m/s²
- 2.5 m/s²
- 3 m/s²
- 32 m/s²
Drag a box over the question, just like in the extension. On a phone, tap it. Or press Snap & solve.
- a = Δv ÷ t
- Δv = 10 − 2 = 8 m/s
- a = 8 ÷ 4 = 2 m/s²
What net force gives a 1,200 kg car an acceleration of 3 m/s²?
- 400 N
- 1,203 N
- 3,600 N
- 36,000 N
Drag a box over the question, just like in the extension. On a phone, tap it. Or press Snap & solve.
- F = m × a
- F = 1,200 kg × 3 m/s²
- F = 3,600 N
A 2 kg ball moves at 3 m/s. What is its kinetic energy?
- 3 J
- 6 J
- 9 J
- 18 J
Drag a box over the question, just like in the extension. On a phone, tap it. Or press Snap & solve.
- KE = ½mv²
- KE = ½ × 2 kg × (3 m/s)²
- KE = ½ × 2 × 9 = 9 J
Sample questions with saved answers. The extension works on any question you snap. Want the full tour? Try the interactive demo.
Projectile motion: see what the physics solver sees
Projectile problems look hard because the ball moves two ways at once. The trick is to split it into sideways and up-and-down. Watch the two velocity arrows.
- Sideways, nothing pushes the ball, so vₓ stays the same the whole flight.
- Up and down, gravity slows the ball until vy is 0 at the very top.
- Then gravity speeds it up on the way down. The path is a parabola.
Sideways (x)
- vₓ stays the same.
- x = vₓ · t
Up and down (y)
- vy = v₀y − g·t
- y = v₀y·t − ½g·t², with g = 9.8 m/s²
Have the answer but not the steps?
Lots of physics teachers hand out the answers and grade the work. If your answer doesn't match, paste the problem and ask how to get there. Here's a real one, worked the way QuizeGpt does it.
A 0.450 kg soccer ball moves at 2.50 m/s. A player kicks it with a steady 50.0 N force in the direction it's moving. Over what distance must the foot touch the ball to speed it up to 7.0 m/s?
- Pick the law: a force over a distance changes kinetic energy, so use work = ΔKE.
- Set it up: F·d = ½m(v² − v₀²).
- Change in KE: ½ × 0.450 × (7.0² − 2.50²) = 0.225 × 42.75 = 9.62 J.
- Solve for d: d = 9.62 J ÷ 50.0 N = 0.192 m.
Answer: d ≈ 0.192 m, about 19 cm
A common slip: subtracting the speeds first, (7.0 − 2.50)², instead of subtracting the squares. Kinetic energy depends on v², so square each speed, then subtract.
How to solve physics problems, step by step
Whether you use a solver or not, this five-step method works on most physics problems.
- Step 1
List knowns and the unknown
Write each number with its unit, and circle what you need to find.
- Step 2
Draw a picture
A sketch or free-body diagram shows directions and which forces act.
- Step 3
Pick the equation
Choose the one that has your unknown and only things you know.
- Step 4
Solve with units
Change to SI units first (m, kg, s), then plug in and keep the units.
- Step 5
Check the answer
Do the units match? Is the size and direction sensible?
How to check a physics answer
Any tool can slip, and so can you. These quick checks catch most mistakes, and they're good habits for the exam.
Do the units match?
A distance should end in meters and a force in newtons. If the units don't work, a step is wrong.
Is the size sensible?
A kick that lasts 50 meters, or a car at 3,000 m/s, means something slipped.
Is the direction right?
Check the signs. Things fall down, friction pushes back, and a negative velocity means the other way.
Common physics mistakes to avoid
Mixing units
Change cm to m, g to kg and km/h to m/s before you plug in.
Mass vs weight
Mass is in kg. Weight is a force: mass × 9.8, in newtons.
Mixing up x and y
In projectile problems, gravity only changes the up-and-down motion, never the sideways speed.
Squaring the wrong thing
In ½m(v² − v₀²), square each speed first, then subtract.
Physics homework help on any page, including Mastering Physics
The QuizeGpt Chrome extension is physics homework help for the page you're on, from Mastering Physics and MyLab to WebAssign and McGraw Hill Connect. Press Ctrl/⌘+Shift+U, drag a box around the problem and its diagram, and the steps show up in a side panel.
✓ Great for
- Homework where help is allowed.
- Practice problems and textbook PDFs.
- Review after you submit, before the exam.
✕ Not for
- Quizzes, tests and exams. Keep it closed.
- Proctored tests. Do your own work.
Taking calculus-based physics? Use the calculus solver for derivatives and integrals, and the algebra solver to rearrange formulas. Mixing in chemistry? Try the chemistry solver. Doing physics online? See how QuizeGpt explains McGraw Hill Connect questions. Exam soon? Read why testing yourself works.
Is the physics solver free?
Yes. You get 10 free answers a day. Upgrade only if you need more.
Plus
$7.99 / month
Billed monthly. Also $4.99 a week, $29.99 a semester, or $59.99 a year.
- Unlimited answers (fair use)
- Full step-by-step explanations
- Checked answers for harder questions
✓ Cancel anytime. 7-day money-back guarantee on your first payment.
Physics help: QuizeGpt vs other tools
Thinking of other apps for physics? Here's how they stack up.
QuizeGpt vs Quizlet
Quizlet helps you memorize. QuizeGpt explains any question you snap.
- Solves any question
- QuizeGpt: Yes — any page, PDF, or imageQuizlet: Limited
- Step-by-step help
- QuizeGpt: Yes, with confidence levelQuizlet: No
- Free plan
- QuizeGpt: Yes — 10 answers/dayQuizlet: Yes (with upsells)
QuizeGpt vs SnapGPT
Both snap a question. QuizeGpt is built to help you learn it.
- Shows how sure it is
- QuizeGpt: YesSnapGPT: Not highlighted
- Hints and why it's wrong
- QuizeGpt: YesSnapGPT: Varies
- Stays off graded tests
- QuizeGpt: Yes — by designSnapGPT: Not stated
QuizeGpt vs Chegg
Chegg has a big bank of answers. QuizeGpt explains your exact question in seconds.
- Speed
- QuizeGpt: SecondsChegg: Minutes to hours (expert Q&A)
- Works on any site
- QuizeGpt: YesChegg: No — its own site/app
- Free plan
- QuizeGpt: Yes — 10 answers/dayChegg: Limited / trial
Physics solver FAQ
Is there a free physics solver?
Yes. QuizeGpt is a free physics problem solver with steps. You get 10 answers a day for free, each with the formula, the units and every step. No card is needed.
Is it an AI physics solver?
Yes. It's an AI physics problem solver that finds the right formula, plugs in each number with its unit, and explains why each step works. It's a physics question solver, not just a calculator.
Can it solve a physics problem from a picture?
Yes. Snap a screenshot or upload a photo, diagram included. As a physics AI picture solver, it reads the numbers, the labels and the arrows as part of the question.
What physics problems can it solve?
Kinematics, projectile motion, forces, friction, work and energy, momentum, circular motion, gravity, circuits, waves and optics. It works for AP Physics 1, 2 and C, and college physics.
Does it read graphs?
Yes. Snap a position-time or velocity-time graph, and it reads slopes and areas from it, like getting acceleration from the slope of a v-t graph.
I have the answer key. Can it show me the steps?
Yes. Paste the problem and the answer you were given, and ask how to get there. It shows the full working, so you can find where your own steps went wrong.
Does it work with Mastering Physics and MyLab?
Yes, for homework where help is allowed. The Chrome extension works on Mastering Physics, MyLab, WebAssign, McGraw Hill Connect and any other page. Keep it closed on quizzes and tests.
Is there a Mastering Physics answer key?
No answer key fits. Mastering Physics often gives each student different numbers, so a copied answer is usually wrong. Snap your own problem and follow the steps instead.
Does it show units?
Yes. Every number keeps its unit, and it changes units to SI (meters, kilograms, seconds) before plugging in, so you can see the units cancel.
How accurate are the answers?
Like any AI tool, it can slip, so it shows every step for you to check. Make sure the units match and the size and direction of the answer make sense.
Can it help with my physics homework?
Yes. It's physics homework help that shows how to solve each problem. Use the steps to learn the pattern, then try the next one yourself. That's what helps on the exam.
Can I use it on a physics exam?
No. Keep QuizeGpt closed on exams, quizzes that count, and proctored tests. Use it for homework you're allowed help on, practice problems, and review after you submit.
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