1. A ball is thrown horizontally at a speed of 7.9 m/s. When the ball is released, it is 1.8 m off the ground. How far (horizontally) will the ball travel? 2. A ball was 2.0 m off the ground and thrown horizontally. It traveled for 7.8 m before it hit the ground. What was the initial speed of the ball? 3. A boulder rolls with speed of 3.5 m/s off a cliff. It hits the ground 2.25 m from the base of the ledge. a) How high is the ledge? bj How long did it take the boulder to fall to the bottom of the cliff? 4. A pencil rolls with constant velocity off of a tabletop 0.89 m high. It hits the ground:0.68 m from the edge of the table. How fast was the pencil initially rolling? 5. A rock is thrown horizontally at a speed of 5.I m/s from the top of a cliff-85 m high. a) How long does it take the stone to reach the bottom-of the cliff? b) The stone strikes the ground how far from the base of the cliff