A tennis ball of mass 0.12 kg is raised 2 m. What is its gravitational potential energy relative to the ground?

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Multiple Choice

A tennis ball of mass 0.12 kg is raised 2 m. What is its gravitational potential energy relative to the ground?

Gravitational potential energy depends on mass, gravity, and height: U = m g h. With the ball’s mass 0.12 kg, height 2 m, and g about 9.8 m/s^2, the energy is 0.12 × 9.8 × 2 = 2.352 J. So the ball has 2.352 joules of gravitational potential energy relative to the ground. The other numbers would come from using different heights or a different value for gravity (for example, 1 m height with the same mass gives 1.176 J; a taller height or different g would approach 24 J).

Gravitational potential energy depends on mass, gravity, and height: U = m g h. With the ball’s mass 0.12 kg, height 2 m, and g about 9.8 m/s^2, the energy is 0.12 × 9.8 × 2 = 2.352 J. So the ball has 2.352 joules of gravitational potential energy relative to the ground. The other numbers would come from using different heights or a different value for gravity (for example, 1 m height with the same mass gives 1.176 J; a taller height or different g would approach 24 J).

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