What is the name of the distance that is 103 larger than a meter

Ball b is hanging from an inextensible cord. an identical ball a is released from rest when it is just touching the cord and drops through the vertical distance h a 5 8 in. before striking ball b. assuming e 5 0.9 and no friction, determine the resulting maximum vertical displacement h b of the ball b

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

If anyone who can me with this hw? i would really appreciate it