Physics 9702 · AS & A Level · Gravitational potential energy and kinetic energy

Gravitational potential energy and kinetic energy — practice question

A cannon-ball with mass $3.50\ \text{kg}$ is launched at a speed of $22.0\ \text{m s}^{-1}$ from a gun on a ship, positioned at a height of $6.00\ \text{m}$ above sea level. Its total energy is made up of the gravitational potential energy relative to the sea surface and the kinetic energy. Determine the total energy of the cannon-ball as it exits the gun?

  • A$206\ \text{J}$
  • B$641\ \text{J}$
  • C$847\ \text{J}$
  • D$1050\ \text{J}$

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