10. Conservation of Energy / Solving Projectile Motion Using Energy / 문제 12
문제 12
A skateboarder performs a trick where he jumps over a barrier. A slow-motion video shows that the center of mass of the skateboarder rises 0.80 m from the launch point to the top of the arc. If he is moving at 4.0 m/s at the apex of his jump, what is his minimum speed at launch?
