The best answer would be a bat hitting a ball
The potential energy of a mass is given by the formula:
Where m is the mass, g is the gravity acceleration and h is the height.
Since the mass and gravity will be constant, for half the potential energy, we have:
So the box will have half the potential energy at half the height of the ramp.
Answer:
Explanation:
First Law of Motion: Law of Inertia.
An object in motion stays in motion unless an outside force is applied to the object to make it stop, and an object at rest will stay at rest unless an outside force is applied to make the object move.
Second Law of Motion: Law of Acceleration.
It explains the equation with force. Force is equal to mass times its acceleration. It also explains how mass can affect acceleration. They are inversely proportional. Mass can decrease acceleration.
Third Law of Motion: Law of Action-Reaction.
For every action that occurs on an object, an opposite reaction occurs. This explains how forces act in pairs, there is an action force and a reaction force.
The characteristic of epithelial cells that makes them ideal for providing this type of protection is that the cells are packed tightly together.
Skin, the body's largest organ,is our first and best defense against external aggressors. The many layers work hard to protect us, however when its condition is compromised, its ability to work as an effective barrier is impaired.