Homework: Vectors and 2-D Kinematics

timer Asked: Sep 2nd, 2015

Question Description

Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19 m/s at an angle 48 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground.

1.horizontal component = 12.71 (answer)

2.vertical component = 14.11 (answer)

3. maximum height the ball goes above the ground = 11.65 (answer)

4.distance between the two girls= 36.61 (answer)

5.After catching the ball, Sarah throws it back to Julie. The ball leaves Sarah's hand a distance 1.5 meters above the ground, and is moving with a speed of 15 m/s when it reaches a maximum height of 14 m above the ground.

 speed of the ball when it leaves Sarah's hand = 21.52 (answer)

 But I need to know the last one it is not 2.09km , I calculated that and its wrong!

6 How high above the ground will the ball be when it gets to Julie? (note, the ball may go over Julie's head.)

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