Answer:
Air-7sec
Water-5sec
Explanation:
-The average speed of the stone in air is given as , average speed in water is . And the total distance is .
Let speed in air be and in water and is displacement:
#Solving the simultaneous equations:
Time in air is 7sec, Time in water is 5sec
Answer:
Explanation:
The change in potential is then defined as the negative of the work done by that force. ... You can't have work done by gravity AND a change in gravitational potential energy. You have to do it one way or the other. This means that the most important step in solving work-energy problems is choosing a system.
the phenomenon is An object that has potential energy can transfer that energy into kinetic energy when the object begins to move, due to its mass or position. For example, a person jumping on a trampoline has potential energy when they reach the peak of a jump, and their force changes direction from upward to downward.
Epidermis is the top layer of the skin, the part of the skin you see.
Dermis is the second layer of skin. It's much thicker and does a lot for your body.
Subcutaneous fat is the bottom layer.
Hope I helped.
Those forces are exactly equal.
Gravity always works as a pair of <em>EQUAL</em> forces ... one in each direction
between two masses. Your weight on the Earth is exactly the same as
the Earth's weight on you.