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i was watching this japanese game show called ninja warriors today. this is a show which contestant are challenged to go through difficult obstacle courses. the reason why this is called "ninja" warriors is probably because it requires many ninja-like agility. as i was watching this show, i noticed that everything was physics-related (though we already know life is full of physics). one of the obstacle was to slide down the inclined slope and hop on to the rope and quickly turn around and jump to the net which is underneath the slide. that was like the inclined slope problem and we can pretty much calculate how fast the athlete would go. also, the rope part is representative of cons. of momentum and energy. the maximum velocity in the x firection is gained at the bottom of the rope so one must release when the rope is at the bottom. however, the energy is lost due to friction and air resistance and whatnots but we can estimate and analyze this whole motion...if we wanted to.