What is the potential energy of the ball as it is half way through the fall, 20 meters high? il mark brainliest

11. Name given to the elements located in group 2. a. Noble gases c. Alkaline earth metals b. Halogens d. Alkali metals

A car has an initial velocity of 45m/s and a final velocity of 0m/s 9 seconds later. a. what is the acceleration? b. how far did they travel during the 9s?

How are families in perodic table determined

To recharge your cell phone you plug it into an electrical outlet for several hours. The electrical energy is stored as ___ energy until you are ready to use the phone. A. radiant B. thermal C. nuclear D. chemical

What does set up transformer do? Set down transform

What was Galileo's contribution to the study of motion?

Why do we eat today

A 2.0-kg ball has a momentum of 25kg. m/s what is the ball's speed?

What type of acceleration does an object moving in circular path with constant speed experience

What happens to the electronegativity of elements as you move from bottom left to upper right across the periodic table?