The answer is A. <span>Some work input is used to overcome friction. </span>
Many ways for example they look up related things and study them or they can test it and see what happens
Answer:
The heat causes the molecules on rubbing surfaces to move faster and have more energy.
Answer:
G. It will take twice as long.
Explanation:
Let's call the original speed of the plane and the distance between Dallas and Pensacola. The time the plane originally takes to complete the flight is
In this problem, we are told that the plane encounters wind moving at half of its speed: , in the opposite direction. This means that the new speed of the plane is
And so, the time the plane takes now to complete the flight is
So, the plane takes twice the time as before.