James swims at a speed of 2 m/s when she notices a shark is behind her and accelerates so that she is skimming at 4 m/s. if her average acceleration is 1.2 m/s how long did it take for james to speed up

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