Joseph can jump vertically 0.5 meters from his skateboard when it is at rest. When Joseph is on the skateboard is moving horizontally across a street, should how high he is able to jump change now that he has horizontal movement? Explain your reasoning.

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)