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What is the total mechanical energy of a system at the highest point of a projec

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Question: What is the total mechanical energy of a system at the highest point of a projectile\'s trajectory?

Options:

  1. Maximum potential energy
  2. Maximum kinetic energy
  3. Zero energy
  4. Constant energy

Correct Answer: Maximum potential energy

Solution: 

At the highest point of a projectile\'s trajectory, the kinetic energy is minimum (zero at the peak) and potential energy is maximum, thus total mechanical energy is maximum potential energy.

What is the total mechanical energy of a system at the highest point of a projec

Practice Questions

Q1
What is the total mechanical energy of a system at the highest point of a projectile's trajectory?
  1. Maximum potential energy
  2. Maximum kinetic energy
  3. Zero energy
  4. Constant energy

Questions & Step-by-Step Solutions

What is the total mechanical energy of a system at the highest point of a projectile's trajectory?
  • Step 1: Understand that a projectile is an object that is thrown into the air and follows a curved path due to gravity.
  • Step 2: Recognize that the highest point of the projectile's path is called the peak or apex.
  • Step 3: At the highest point, the speed of the projectile is at its lowest, which means its kinetic energy is also at its lowest (it can be zero if it momentarily stops).
  • Step 4: At the same highest point, the height of the projectile is at its maximum, which means its potential energy is at its highest.
  • Step 5: Total mechanical energy is the sum of kinetic energy and potential energy in the system.
  • Step 6: Since kinetic energy is minimum (zero at the peak) and potential energy is maximum at the highest point, the total mechanical energy is equal to the maximum potential energy.
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