Physics
Free-Fall Calculator
Compute how long it takes to fall from a height and what the impact velocity will be using the standard gravity equations.
Drop height and optional initial velocity to get impact time and speed (ignoring drag).
Free fall
h = v₀ t + ½ g t² v = v₀ + g t
The calculator assumes downward positive acceleration (g). Initial velocity can be zero or any downward speed.
How to use
- Enter the drop height, optional initial velocity, and gravitational acceleration (9.81 m/s² by default).
- Hit calculate to get time to impact and terminal speed in m/s and mph.
Example
Input: Height = 20 m, v₀ = 0, g = 9.81 m/s²
Output: Time ≈ 2.02 s, Impact velocity ≈ 19.8 m/s (≈ 44 mph)
Student-friendly breakdown
This walkthrough emphasizes the most searched ideas for Free-Fall Calculator: Free-Fall Calculator. Start with the formula above, then follow the guided steps to double-check your work. For quick revision, highlight the givens, plug into the equation, and finish by verifying your units.
Need more support? Use the links below to open the long-form guide, browse additional examples, or hop into adjacent calculators within the same topic. Each resource is interlinked so crawlers (and readers) can discover the next best action within a couple of clicks—one of the easiest ways to lift topical authority.
Deep dive & study plan
The Free-Fall Calculator is a go-to tool whenever you need to drop time and impact velocity from any height (no drag).. It focuses on free fall, gravity, kinematics, which means searchers often arrive with intent-heavy queries like “how to free-fall calculator quickly” or “free-fall calculator formula explained.” Use this calculator to capture those intents and keep learners on the page long enough to send positive engagement signals.
Under the hood, the calculator leans on the calculator assumes downward positive acceleration (g). initial velocity can be zero or any downward speed.—that’s why we surface the full expression (“h = v₀ t + ½ g t² v = v₀ + g t”) directly above the interactive widget. When you embed that formula inside H2s or supporting paragraphs, you help both humans and crawlers understand what entity the page represents.
Execution matters as much as the math. Follow the built-in procedure: Step 1: Enter the drop height, optional initial velocity, and gravitational acceleration (9.81 m/s² by default). Step 2: Hit calculate to get time to impact and terminal speed in m/s and mph.. Each numbered instruction is short enough to scan on mobile but descriptive enough to satisfy Google’s Helpful Content guidelines. Encourage students to jot down units, double-check signs, and compare answers with the Example card to build confidence.
The Example section itself is packed with semantic clues: “Height = 20 m, v₀ = 0, g = 9.81 m/s²” leading to “Time ≈ 2.02 s, Impact velocity ≈ 19.8 m/s (≈ 44 mph).” Pepper similar narratives throughout your copy (and internal links from related guides) so canonical search intents are answered without pogo-sticking back to Google.
Quick retention checklist
- Speak the formula aloud (or annotate it) so the relationships stick.
- Write each step in your own words and compare with the numbered list above.
- Swap in new numbers for the Example to make sure the calculator (and your logic) handles edge cases.
- Link out to at least two related calculators to keep readers exploring your topical hub.
FAQ & notes
Can I model upward throws?
Enter the upward speed as the initial velocity—time to impact will include the ascent and descent phases.
Does it include air resistance?
No. For more accurate predictions of real-world drops, incorporate drag or use a CFD/ballistics tool.
What formula does the Free-Fall Calculator use?
The calculator assumes downward positive acceleration (g). Initial velocity can be zero or any downward speed.
How do I use the Free-Fall Calculator?
Enter the drop height, optional initial velocity, and gravitational acceleration (9.81 m/s² by default). Hit calculate to get time to impact and terminal speed in m/s and mph.