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Momentum is the product of mass and velocity, while impulse is the change in momentum caused by a force over time. Together they describe how objects change motion.

Công thức

The calculator finds momentum (p = m × v) and impulse (J = F × Δt = Δp)

J: F × Δt = Δp) — F × Δt = Δp)
F: Δp) — Δp)
p: m × v) and impulse (J = F × Δt = Δp) — m × v) and impulse (J = F × Δt = Δp)

Hướng dẫn từng bước

1Enter initial velocity, final velocity, mass, or force and time duration
2The calculator finds momentum (p = m × v) and impulse (J = F × Δt = Δp)
3Results show both values and verify the impulse-momentum relationship

Ví dụ có lời giải

đầu vào

m = 2 kg, v₀ = 5 m/s, v_f = 15 m/s

Kết quả

Δp = 20 kg·m/s

Or F × t = 20 N·s for any force duration

Lỗi thường gặp cần tránh

✕Confusing momentum direction with speed magnitude
✕Applying conservation incorrectly in systems with friction or air resistance

Câu hỏi thường gặp

Why is impulse important in collisions?

Extending the collision time (increasing Δt) reduces the force needed, which is why airbags save lives.

Is momentum conserved?

Yes, in isolated systems with no external forces. This is why collisions between objects follow predictable patterns.

Sẵn sàng để tính toán? Dùng thử Máy tính Momentum miễn phí

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