A weightlifter lifts a 250-kg mass 0.5 meters above his head, how much PEg does the mass have (Note: g=9.8 m/s2)?

Avalue that describes how heavy an object is and is related to the force of gravity is

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?