Landing on one's feet on a trampoline allows for greater height due to effective energy transfer and the added force from leg muscles.
When a person jumps on a trampoline, landing on one's feet can often result in a greater height. The reason is that when landing on the feet, the legs can be used to propel the jumper upwards with additional force. Moreover, landing in this way allows for a more effective transfer of energy from the trampoline's surface to the jumper. This is different from landing on the back, where the ability to generate additional force is limited, leading to a lower height achieved. Professional athletes often use this technique to maximize their jumps.
So, reaching a greater height is typically achieved by landing on the feet, due to the efficient energy transfer and the extra propulsion provided by leg muscles.