Final answer:
The gravitational potential energy of the toy snake on the 3 m tall shelf is 132.3 joules.
Step-by-step explanation:
The gravitational potential energy (GPE) of an object can be calculated using the equation G.P.E. = mgh, where m is the mass in kg, g is the acceleration due to gravity (approximately 9.8 m/s² on Earth), and h is the height in meters. In this case, the toy snake on top of the shelf has a mass of 4.5 kg and is 3 m above the ground. Therefore, the GPE of the snake can be calculated as:
G.P.E. = 4.5 kg × 9.8 m/s² × 3 m = 132.3 joules