Sticky Collision Calculator
🎱 Momentum & collisions. Use the Sticky collision formula to find speed together, mass 1, velocity 1, mass 2, velocity 2: pick the value you want, type the others, and the answer updates as you go.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Speed together | m/s |
| Mass 1 | kg |
| Velocity 1 | m/s |
| Mass 2 | kg |
| Velocity 2 | m/s |
Worked example
Find the speed together when Mass 1 = 2 kg, Velocity 1 = 3 m/s, Mass 2 = 2 kg, Velocity 2 = 0 m/s.
Using v = (m1u1 + m2u2)/(m1 + m2): Speed together = 1.5 m/s.
Frequently asked questions
What is the formula for Sticky collision?
v = (m1u1 + m2u2)/(m1 + m2).
What do the letters stand for, and what units are used?
Speed together in m/s, Mass 1 in kg, Velocity 1 in m/s, Mass 2 in kg, Velocity 2 in m/s.
How do you calculate speed together?
Put the values into v = (m1u1 + m2u2)/(m1 + m2). For example, with Mass 1 = 2 kg, Velocity 1 = 3 m/s, Mass 2 = 2 kg, Velocity 2 = 0 m/s, speed together = 1.5 m/s.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (speed together, mass 1, velocity 1, mass 2, velocity 2) and fill in the others: it rearranges the formula for you.
