A spherical rock rests at the top of a steep hill. the rock has A)Potential Energy B) Chemical energy C)Kinetic energy or D) no energy
i think it's A or B but I'm not sure. thanks
potential
I think you're right, though few people wold want to extract the chemical energy.
The correct answer is A) Potential Energy. When the rock is at the top of the hill, it has potential energy due to its position relative to the Earth's surface. As the rock rolls down the hill, this potential energy gets converted into kinetic energy, indicating movement. Chemical energy is typically associated with the energy stored in chemical bonds, so it is not applicable in this scenario.
To determine the type of energy the spherical rock possesses, we need to understand the different forms of energy mentioned in the options.
A) Potential Energy: This type of energy is associated with the position of an object relative to other objects. It depends on the height and mass of the object.
B) Chemical Energy: This energy is stored in the chemical bonds of molecules and is released during chemical reactions. It is typically found in substances such as fuel, food, and batteries.
C) Kinetic Energy: This form of energy is associated with the motion of an object. It depends on the mass and velocity of the object.
D) No Energy: This option indicates that the rock does not possess any form of energy.
Now, let's consider the scenario mentioned in your question. The spherical rock, resting at the top of a steep hill, is not in motion. It is neither undergoing any chemical reactions nor emitting or absorbing any energy. As a result, the rock does not have any kinetic energy or chemical energy (options B and C).
However, since the rock is positioned at a certain height relative to the ground, it possesses potential energy (option A). This potential energy arises due to the force of gravity pulling the rock downwards. As the rock rolls down the hill, this potential energy will be converted into kinetic energy.
Therefore, the correct answer is A) Potential Energy.