Final answer:
The gravitational potential energy of a 1 kg ball that is 2 meters above the floor, with an acceleration due to gravity of 9.8 m/s², is calculated using the formula GPE = mgh to be 19.6 J.
Step-by-step explanation:
The question pertains to calculating the gravitational potential energy of a 1 kg ball that is 2 meters above the floor. The formula for the gravitational potential energy (GPE) is given by GPE = mgh, where m stands for mass, g is the acceleration due to gravity, and h is the height above the reference point.
In this case, the mass (m) is 1 kg, gravity (g) is 9.8 m/s² (as given in the question), and the height (h) is 2 meters. Plugging these values into the formula yields:
GPE = 1kg * 9.8 m/s² * 2m = 19.6 J
Therefore, the gravitational potential energy of the ball is 19.6 Joules (J).