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Kalkulačka impulzu

Force Calculator (F = ma)

Mass (m)

Acceleration (a)

m/s²

What is Impulse Calculator?

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Impulse (J) is the change in momentum of an object when a force acts over time: J = F × Δt = Δp = m × Δv. A large force over a short time (collision) or a small force over a long time can produce the same impulse.

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How to Impulse Calculator

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1Impulse = Force × Time = Change in momentum
2J = F × Δt = m × Δv
3Units: N·s = kg·m/s
4Conservation of momentum: in a closed system, total impulse = 0

Worked Examples

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Example 1

Given:0.5 kg ball, velocity changes from 0 to 20 m/s

Výsledok:Impulse = 0.5 × 20 = 10 N·s

Example 2

Given:Force 200 N for 0.05 seconds

Výsledok:Impulse = 200 × 0.05 = 10 N·s

Same impulse, different scenarios

Impulse in Sports

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Sport	Force	Contact time	Impulse
Golf drive	~4,000 N	~0.5 ms	~2 N·s
Baseball bat	~4,500 N	~1 ms	~4.5 N·s
Soccer kick	~1,200 N	~8 ms	~9.6 N·s
Karate punch	~3,000 N	~10 ms	~30 N·s

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Pro Tip

The impulse-momentum theorem explains why following through in sports matters: extending contact time increases the force applied to the ball, increasing the impulse and final velocity.

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Did you know?

Airbags in cars work by increasing the collision time from ~2 ms (against the steering wheel) to ~40 ms (against the airbag). Same impulse but 20× longer contact time means 20× less force — the difference between injury and death.

References

›Impulse (physics) — Wikipedia

Mathematically verified

Reviewed October 2026

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