Impulse Formula:
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Definition: Impulse is the product of a force (F) and the time interval (Δt) during which the force acts.
Purpose: It measures the change in momentum of an object when a force is applied over a time interval.
The calculator uses the formula:
Where:
Explanation: The force applied is multiplied by the duration of its application to determine the impulse.
Details: Impulse is crucial in physics for understanding collisions, rocket propulsion, sports mechanics, and safety engineering (like airbags).
Tips: Enter the force in Newtons and the time interval in seconds. Both values must be positive numbers.
Q1: What are the units of impulse?
A: Impulse is measured in Newton-seconds (N s), which is equivalent to kg·m/s.
Q2: How is impulse related to momentum?
A: Impulse equals the change in momentum (J = Δp), according to the impulse-momentum theorem.
Q3: Why is time important in impulse?
A: A longer application time means less force is needed to achieve the same change in momentum.
Q4: Can impulse be negative?
A: Yes, if the force direction is opposite to the chosen positive direction.
Q5: What's a practical example of impulse?
A: Catching a baseball: moving your hand back increases Δt, reducing the force you feel.