[4 pts] On a lovely summer's day, you're watching your nephew on a trampoline (and idly thinking about Physics 101, which you realize you miss deeply). As he warms up, he bounces gently on the trampoline but never leaves it. Is his motion simple harmonic motion? Later, he bounces with larger amplitude and gets several meters into the air above the trampoline. Is this simple harmonic motion? Explain and justify your answers