10. Conservation of Energy
Solving Projectile Motion Using Energy
1PRACTICE PROBLEM
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?
![](https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/aff0584c-2475-4bdb-bcf1-3850d104432e)
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?