Tarzan is swinging back and forth on a 6.25 m long vine. What is the
period of his oscillation?
(Unit = s)

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

What are similarities and differences of reflection, refraction, diffraction and absorption?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?