# Various physics questions

by mikefitz
Tags: physics
 HW Helper P: 1,449 I would attempt the first one with energy conservation. That is he gives himself a certain amount of kinetic energy before leaving the ground. All of this kinetic energy will then be converted to potential energy at the top of his motion. For the camera one use constant acceleration equations. The first bit of information enable you to calculate the gravitational acceleration on the moon, assuming it dropped out of rest by using $$v=u+at$$ then use $$s=ut+0.5at^2$$ to calculate the distance falled. With the ball problem you are in serious trouble - too much to learn! What will the horizontal and vertical components of the tension in the string be if the magnitude of the tension is T? With the marble you need to apply projectile motion theory.