Physics · Grades 10–12
Average force during contact
Convert milliseconds to seconds before dividing.
Rule and assumptions
Convert milliseconds to seconds before dividing.
F̄ = Δp/Δt
Worked examples
Momentum changes by +74 kg·m/s during 180 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
F̄ = Δp/Δt 74 / (180/1000) = 411.111
411.111 N
Momentum changes by +12 kg·m/s during 30 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
F̄ = Δp/Δt 12 / (30/1000) = 400
400 N
Try two questions
Momentum changes by +71 kg·m/s during 260 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
Momentum changes by +8 kg·m/s during 230 ms. Find the signed average net force. Round to 3 decimal places if needed. Answer in N.
Answers and reasoning
Answers and marking notes
- 273.077 N
F̄ = Δp/Δt 71 / (260/1000) = 273.077
- 34.783 N
F̄ = Δp/Δt 8 / (230/1000) = 34.783
Further reading and review references
These are reference links, not copied exercises, institutional endorsement or proof of independent review.
Learning preview · independent educational and translation review required. Suggested grades are not official curriculum alignment.