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כיצד לחשב את Impulse

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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.

מדריך שלב אחר שלב

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

Worked Examples

קלט
0.5 kg ball, velocity changes from 0 to 20 m/s
תוצאה
Impulse = 0.5 × 20 = 10 N·s
קלט
Force 200 N for 0.05 seconds
תוצאה
Impulse = 200 × 0.05 = 10 N·s
Same impulse, different scenarios

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