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What is the momentum of a 79 kg man on an eastbound train traveling at 135 m/s?

(p = mv)

A. 214 kg m/s east
B. 10,665 kg m/s east
C. 1.7 kg m/s east
D. 10,270 kg m/s east

Answer :

The momentum of the 79 kg man on the eastbound train is 10,665 kg·m/s east. Thus, option (b) is correct.

To find the momentum of the man on the train, we use the momentum formula: p = mv, where p is momentum, m is mass, and v is velocity.

  • Step 1: Identify the mass (m) of the man.
    Given: m = 79 kg
  • Step 2: Identify the velocity (v) of the train.
    Given: v = 135 m/s (eastbound)
  • Step 3: Multiply mass by velocity to find momentum.
    p = m × v = 79 kg × 135 m/s = 10,665 kg·m/s (east)

Complete Question:

What is the momentum of a 79 kg man on an eastbound train that is traveling 135 m/s? (p=mv)

a. 214 kg · m/s east

b. 10,665 kg · m/s east

c. 1.7 kg · m/s east

d. 10,270 kg · m/s east

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