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If a 2 kg ball is traveling at 4 meters per second, what is its kinetic energy?

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Answer:

[tex]\displaystyle KE = 32 \ J[/tex]

General Formulas and Concepts:

Energy

Kinetic Energy Formula: [tex]\displaystyle KE = \frac{1}{2}mv^2[/tex]

  • KE is in J
  • m is in kg
  • v is in m/s

Explanation:

Step 1: Define

Identify variables

m = 2 kg

v = 4 m/s

Step 2: Find KE

  1. Substitute in variables [Kinetic Energy Formula]:                                          [tex]\displaystyle KE = (2 \ kg)(4 \ m/s)^2[/tex]
  2. Simplify:                                                                                                            [tex]\displaystyle KE = 32 \ J[/tex]

Topic: AP Physics 1 - Algebra Based

Unit: Energy

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