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What is the potential energy of an object of mass 2 kg at a height of 5 m? (g =

Practice Questions

Q1
What is the potential energy of an object of mass 2 kg at a height of 5 m? (g = 10 m/s²) (2018)
  1. 100 J
  2. 50 J
  3. 20 J
  4. 10 J

Questions & Step-by-Step Solutions

What is the potential energy of an object of mass 2 kg at a height of 5 m? (g = 10 m/s²) (2018)
  • Step 1: Identify the formula for potential energy (PE), which is PE = mgh.
  • Step 2: Identify the values needed for the formula: mass (m) = 2 kg, gravitational acceleration (g) = 10 m/s², and height (h) = 5 m.
  • Step 3: Substitute the values into the formula: PE = 2 kg × 10 m/s² × 5 m.
  • Step 4: Calculate the multiplication: 2 × 10 = 20, then 20 × 5 = 100.
  • Step 5: Conclude that the potential energy is 100 Joules (J).
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