Final answer:
The energy of a 3kg apple hanging 2m from a tree branch is 58.8 Joules.
Step-by-step explanation:
The energy of a 3kg apple hanging 2m from a tree branch can be calculated using the formula for gravitational potential energy:
Potential Energy (PE) = mass (m) * acceleration due to gravity (g) * height (h)
By substituting the given values, we get:
PE = 3kg * 9.8m/s^2 * 2m = 58.8 Joules.
So, the energy of the apple is 58.8 Joules.