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

Gravitational potential energy and kinetic energy — practice question

A mass $m$ is placed in space within a uniform gravitational field. As the mass travels a displacement $x$, from P to Q, it loses potential energy equal to $E$. Which row gives the correct value for the magnitude and the direction of the acceleration due to gravity in this field?

  • Amagnitude $\frac{E}{mx}$, direction $\rightarrow$
  • Bmagnitude $\frac{E}{mx}$, direction $\leftarrow$
  • Cmagnitude $\frac{E}{x}$, direction $\rightarrow$
  • Dmagnitude $\frac{E}{x}$, direction $\leftarrow$

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