Question

which type of energy is stored energy?
potential
mechanical
kinetic
chemical
question 6
which type(s) of energy does a ball falling through the air have?
kinetic energy because it still has a distance to move before it hits the ground and potential energy because it is moving
potential energy because it is moving right
potential energy because it still has a distance to move before it hits the ground and kinetic energy because it is moving
only kinetic energy because it still has a distance to move before it hits the ground

Explanation:

• For the first question:
• Potential energy is defined as the stored energy in an object due to its position or state. For example, a book on a shelf has potential energy because of its height above the ground.
• Mechanical energy is the sum of kinetic and potential energy. Kinetic energy is the energy of motion ($KE=\frac{1}{2}mv^{2}$, where $m$ is mass and $v$ is velocity). Chemical energy is the energy stored in chemical bonds, like in batteries or food.
• For the second question:
• The formula for potential energy is $PE = mgh$ (where $m$ is mass, $g$ is the acceleration due to gravity, and $h$ is height). Since the ball still has a height ($h>0$) before hitting the ground, it has potential energy.
• Also, because the ball is moving (has a non - zero velocity $v>0$), and kinetic energy is given by $KE=\frac{1}{2}mv^{2}$, it has kinetic energy.

Answer:

• First question: potential
• Second question: potential energy because it still has a distance to move before it hits the ground and kinetic energy because it is moving