Aspacecraft is moving at 225 m/s upward; its momentum is 45,000 kg·m/s upward. what is its mass? a. 200 kg b. 100 kg c. 45,000 kg d. 10,125,000 kg

If element x has 99 protons how many electrons does it have

You want to lose weight and have been trying to decide which type of fad diet is best for you. you ask your doctor, who responds that a. fad diets are a temporary fix but generally don't have any side effects b. fad diets can be used several times a year to maintain a healthy weight c. fad diets can be risky for your health and, in the long run, do not work d. fad diets should never be used one right after the other; there should be a break between them select the best answer from the choices provided. a b c d

Describe cytokinesis in plants and animals. in animals: in plants.