1. calculate the displacement and velocityof the volleyball 0.50s after Jason hits it.
   2. A tennis ball is thrown vertically upwardwith an initial velocity of +8.0m/s
         a)whatwill its speed be when it returns to its starting point?
         b)howlong it will take for it to reach its strting point?
   3.A robot probe drops a camera off thge rimof a 24-km-deep on mars, where the free fall acceleration is-3.7m/s^2. Find the required for the camera to reach the craterfloor and the velocity with which it hits.
4. a coin is tossed upward.
   a) what happens to its velocity while it isin the air?
    b)Does its acceleration increase,decrease, or remain constant while it is in the air?
5.a ball is thrown vertically upward. what are its velocityand acceleration when it reaches its maximum altitude? what is itsacceleration just before it hits the ground?