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Answer :
Final answer:
The potential energy of the cinder block is calculated using the formula mass * gravity * height. When we plug in given values (8 kg, 9.8 m/s², and 18 m respectively), the result is approximately 1,411.2 J. The closest provided answer would be 1,568 J.
Explanation:
The potential energy of an object can be calculated using the formula: Potential Energy = mass * gravity * height. Given that the mass of the cinder block is 8 kg, the standard acceleration due to gravity on Earth is about 9.8 m/s², and the height it is sitting at is 18 m. So, we substitute these values into the formula:
Potential Energy = 8 kg * 9.8 m/s² * 18 m = 1,411.2 J. Because J stands for Joules, which is the unit of energy, the closest answer would be option a. 1,568 J, although it is not precisely correct.
The potential energy of an object is given by the formula PE = mass × gravitational acceleration × height. In this case, the mass of the cinder block is 8 kg, the gravitational acceleration is approximately 9.8 m/s^2, and the height is 18 m. Substituting these values into the formula, we get PE = 8 kg × 9.8 m/s^2 × 18 m = 1,568 J.
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