Home
Back
Momentum Change Formula:
| From: | To: |
Change in momentum (Δp) represents the difference in an object's momentum over a specific time interval. According to Newton's second law, the change in momentum equals the impulse applied to the object, which is the product of force and time.
The calculator uses the momentum change formula:
Where:
Explanation: This formula shows that the change in an object's momentum is directly proportional to both the force applied and the duration for which the force acts.
Details: Calculating change in momentum is essential in physics for understanding collisions, rocket propulsion, sports mechanics, and various engineering applications where force and motion interactions occur.
Tips: Enter force in newtons (N) and time interval in seconds (s). Both values must be non-negative. The calculator will compute the change in momentum in kg·m/s.
Q1: What is the unit of momentum change?
A: The SI unit for change in momentum is kilogram-meter per second (kg·m/s), which is equivalent to newton-second (N·s).
Q2: How is this related to impulse?
A: Change in momentum equals impulse (J), where impulse is defined as the product of force and time: J = F × Δt = Δp.
Q3: Can momentum change be negative?
A: Yes, momentum change can be negative if the force acts in the opposite direction to the initial motion, resulting in a decrease in momentum.
Q4: What's the difference between momentum and change in momentum?
A: Momentum (p) is the product of mass and velocity at a specific instant, while change in momentum (Δp) is the difference between final and initial momentum over a time interval.
Q5: How does this apply to real-world situations?
A: This principle explains why airbags in cars increase collision time to reduce force, why follow-through is important in sports, and how rockets generate thrust by expelling mass.