If you drop a rock from a height of 7.5m, it accelerates at g and strikes the ground 1.23718s later. if you drop the same rock from half the height, what will be it’s acceleration? the acceleration of gravity is 9.8 m/s^s.

Acharge q experiences no net force at a particular point in space. which of the following situations described below must always be true? -there are no other charges nearby. -if there are other charges nearby, they must all have the same sign as q. -if there are other charges nearby, they must all have the opposite sign of q. -if there are other charges nearby, the total positive charge must equal the total negative charge. -none of the above