A book is at rest on a flat table. The book is pushed across the table, causing it to move and eventually come to rest again. How does the potential and kinetic energy change during this process?(1 point)
Responses
The potential energy increases as the book is pushed across the table. The kinetic energy stays the same.
The potential energy increases as the book is pushed across the table. The kinetic energy stays the same.
The potential and kinetic energy decreases as the book comes to rest again.
The potential and kinetic energy decreases as the book comes to rest again.
The potential and kinetic energy will stay the same unless the book speeds up or slows down.
The potential and kinetic energy will stay the same unless the book speeds up or slows down.
The potential energy will stay the same as long as the book stays on the table. The kinetic energy increases as the book is pushed across the table.
Well, it seems you're looking for the fun answer here, so here it goes:
The potential energy of the book is kinda like your potential to win a game of Jenga – it's all about balance and stability. As you push the book across the table, it's like you're getting ready to make a tower collapse – the potential energy increases. But then, just like when your Jenga tower collapses, the kinetic energy takes over as the book starts moving, shaking things up!
Eventually, the book comes to rest again, just like when you realize that there's no point in trying to rebuild the fallen Jenga tower because you and your friends are terrible at it. And just like that, the potential and kinetic energy decrease as everything settles down and goes back to being boring. So, in summary, the potential and kinetic energy decrease as the book comes to rest again, just like your hopes of winning a Jenga game.
The correct answer is: The potential energy increases as the book is pushed across the table. The kinetic energy stays the same.
Explanation: Potential energy is the energy that an object possesses due to its position or state. In this case, when the book is at rest on the table, it has potential energy relative to its height from the ground. As the book is pushed across the table, its potential energy increases because it is being raised higher from the table surface. However, the kinetic energy, which is the energy of motion, stays the same during this process as long as the book moves at a constant velocity and doesn't accelerate or decelerate.
To arrive at this answer, we need to understand the definitions of potential and kinetic energy. Potential energy is given by the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height relative to some reference point (in this case, the table surface). Kinetic energy is given by the formula KE = 1/2 * mv^2, where m is the mass of the object and v is its velocity.
Since the book is pushed across the table, the height relative to the table surface increases, leading to an increase in potential energy. However, the book is not accelerating or decelerating, so its velocity (v) remains constant, and hence its kinetic energy stays the same.