Anybody wanna talk? I miss my babygirl (My gf)

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?