a body is thrown vertically upward from the Earth's surface and it took 8 seconds to return to it's original position. find out the initial velocity with which it was throw up ( The air resistance is considered as zero)​

it has to be b, about 97 percent.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.

it would stay the same