Physics

Problem

2\,\text{kg}

bag is raised from a height of

1.5\,\text{m}

4.0\,\text{m}

above the ground. Take

g=9.8\,\text{m/s}^{2}

. Calculate the increase in its gravitational potential energy. a)

24.5\,\text{J}

49\,\text{J}

78.4\,\text{J}

-49\,\text{J}