Force from Change in Momentum Calculator
🎱 Momentum & collisions. Use the Force from change in momentum formula to find force, mass, final velocity, start velocity, time: 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 |
|---|---|
| Force | N |
| Mass | kg |
| Final velocity | m/s |
| Start velocity | m/s |
| Time | s |
Worked example
Find the force when Mass = 60 kg, Final velocity = 10 m/s, Start velocity = 0 m/s, Time = 2 s.
Using F = (m v - m u)/t: Force = 300 N.
Frequently asked questions
What is the formula for Force from change in momentum?
F = (m v - m u)/t.
What do the letters stand for, and what units are used?
Force in N, Mass in kg, Final velocity in m/s, Start velocity in m/s, Time in s.
How do you calculate force?
Put the values into F = (m v - m u)/t. For example, with Mass = 60 kg, Final velocity = 10 m/s, Start velocity = 0 m/s, Time = 2 s, force = 300 N.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (force, mass, final velocity, start velocity, time) and fill in the others: it rearranges the formula for you.
