The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. neglect nonconservative forces, such as friction and air resistance, and find the height h of the highest point reached by the skateboarder on the right side of the ramp.

1.5 m

Explanation:

Using the law of conservation of energy

Gain in potential energy by the skateboarder=  Loss in kinetic energy by the skateboarder

PE=KE where KE represent potential energy, PE represent potential energy

where m is mass of skateboarder and v is velocity of skateboarder

PE=mgh where m is the mass of skateboarder, g is acceleration due to gravity which in this case is taken as and h is the highest point reached by the skateboarder. Equating PE=KE we have

and since m are on both LHS and LHS, the cancel

} and making h the subject of the above formula

Substituting v with 5.4 m/s and g as we obtain

Rounded off, h=1.5 m

the part of the wave he is travelling on is the crest

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.