How do I choose the right velocity formula for my problem?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
Follow this decision tree based on what you know:
- Know distance and time? → Use v = d/t
- Know initial velocity, acceleration, and time? → Use v = u + at
- Know acceleration and distance (no time)? → Use v² = u² + 2as
- Know kinetic energy and mass? → Use v = √(2KE/m)
- Know momentum and mass? → Use v = p/m
- Know height (free fall)? → Use v = √(2gh)
- Know force, distance, and mass? → Use v = √(2Fd/m)
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