A 2 kg block is lifted by 5 m. What work is done against gravity?

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Multiple Choice

A 2 kg block is lifted by 5 m. What work is done against gravity?

Explanation:
Work against gravity equals the increase in gravitational potential energy, so W = m g h. With a mass of 2 kg lifted 5 m, this is W = 2 × 9.8 × 5 ≈ 98 joules. This is the energy you must provide to raise the block, stored as gravitational potential energy. (The work gravity does would be the opposite sign, −98 J, since gravity acts downward while the block moves upward.)

Work against gravity equals the increase in gravitational potential energy, so W = m g h. With a mass of 2 kg lifted 5 m, this is W = 2 × 9.8 × 5 ≈ 98 joules. This is the energy you must provide to raise the block, stored as gravitational potential energy. (The work gravity does would be the opposite sign, −98 J, since gravity acts downward while the block moves upward.)

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