pa help po need po asap.


Solve the following problems:
1. A student dropped a ball from the top of a tall building, which took 2.8 seconds to reach the ground
a. What was the speed of the ball just before hitting the ground?
b. What is the height of the building?

2. If a dropped object falls 19.6 meters in 2 seconds, how far it will fall in 4 seconds?​