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Free Physics Formulas Flashcards
Physics exams reward instant formula recall — the thinking time you save on "what’s the equation?" gets spent on the actual problem. These are the workhorse formulas of introductory mechanics and electricity.
Study these 10 starter cards
QUESTION
Tap the card to reveal the answer
QWhat is Newton’s second law?
AF = ma (force = mass × acceleration)
QWhat is the formula for kinetic energy?
AKE = ½mv²
QWhat is the formula for gravitational potential energy near Earth?
APE = mgh
QWhat is Ohm’s law?
AV = IR (voltage = current × resistance)
QWhat is the formula for density?
Aρ = m/V (mass divided by volume)
QWhat is the formula for electrical power?
AP = VI (also P = I²R)
QWhat is the acceleration due to gravity on Earth?
AApproximately 9.8 m/s²
QWhat is the formula for momentum?
Ap = mv (mass × velocity)
QWhat is the wave equation relating speed, frequency, and wavelength?
Av = fλ
QWhat is the formula for work?
AW = Fd (force × distance moved in its direction)
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Reading answers is recognition — remembering them next month takes spaced repetition. Build your own physics formulas deck and we'll schedule every review at the right moment.
Create your free deck →How to study physics formulas with flashcards
- One fact per card. Card each formula twice: once as "formula for X?" and once as "when does this formula apply?" — knowing the trigger is half the skill.
- Rate honestly. After each card, choose Again, Hard, Good, or Easy — the spaced repetition algorithm uses your answer to decide when the card returns, right before you'd forget it.
- A few minutes daily beats marathons. Ten new cards a day is roughly 3,650 a year, retained. Deep dives: How to make flashcards that actually work · How to study for exams with flashcards.
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