SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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kinetic energy only
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potential energy only
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both kinetic and potential energy.
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neither kinetic or potential energy.
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Detailed explanation-1: -“At the top of the ramp, the skaters have what we call gravitational potential energy-energy due to height above the ground. As they go down, it gets converted into kinetic energy, the energy of motion.”
Detailed explanation-2: -As the skateboarder moves, her potential energy is converted to kinetic energy (KE), or the energy of motion as her position changes along the track and the velocity changes. The maximum amount of kinetic energy the skateboarder can have is entirely dependent on the amount of potential energy of the system.
Detailed explanation-3: -It is also given that he is standing at the top of a tall ramp. Then, he must have gravitational potential energy due to his height. Therefore, option B is the right answer.
Detailed explanation-4: -Potential Energy is the energy stored in an object because of its position. Kinetic Energy is the energy of motion. As the skateboard rolls down the ramp it loses potential energy and gains kinetic energy. The total energy of the skateboarder remains constant.