1.A ball is released from the top of a cliff; it hits the ground1.1seconds later. Assuming the ball is a free falling object, how many meters is the cliff above the ground below? (Useg= 9.8 m/s².Express your answer to one decimal point.)

2.The velocity vs. time curve of an object is an increasing straight line. You observe that when the time is 1 second, the velocity is equal to3m/s, and when the time is4 seconds,the velocity is15m/s.What is the acceleration of the object? (Express your answer to one decimal point.)