Final answer:
The student's potential energy just before bungee jumping from a 50 m tall platform is 25,000 Joules.
Step-by-step explanation:
The student's potential energy (PE) before bungee jumping can be calculated using the formula PE = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (approximately 10 m/s² for simplification), and h is the height in meters. Substituting the given values into the formula, we have:
PE = (50 kg) × (10 m/s²) × (50 m) = 25000 Joules.
Therefore, the student's potential energy at the top of the platform is 25,000 Joules.