<span>b. the reason we must wear seat belts </span>
Answer:
increasing the masses of the objects and increasing the distance between the objects
The answer is D.) all of the above
Power is equal to energy per unit time. In this case, power is proportional to energy while is inversely proportional to time,on the other hand. Given the two swimmers exerts same amount of energy but the faster swimmer just does things in faster time, then the faster swimmer should develop more power from shorter time