How much potential energy does a 40-n medicine ball gain when it is lifted 5 m? select one:
a. 20 j
b. 100 j
c. 200 j
d. 1,000 j

How is an electron dot structure used to represent a covalent bond?

Diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano.the piano moves upward, then stops, and then it starts to fall to the ground. which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force

Describe the velocity of three objects you encounter during the day. if you know the numerical value of the velocity, write it down. if not, just write an approximation of the velocity, including the direction need answers fast