Question

How do I answer these questions

Chapter 2-Kinematies in One Dimension Free-fall motion . A ball is thrown vertically upward at an initial speed of 4of K to be the ground; leaves the hand when it is 15 m above the ground (about the that the effects of air resistance can be ignored. Choose your landm then att-0, y.-+15 m, V +49 m/s speed in mph? Do you think this is a realistic possibility? b. (10 pts) What is the maximum height (in m) above the ground c. (10 pts) How much time does it take to reach a height that is o g some helpful visualization. There are two answers ne-half of the maximum height above the ground (i.e., at y" +68.75 m)? (Think a usin distinguish betw [ Answer:-1.25 s, 8.75 s ] about the motion, een them.) d. (10 pts) Determine the impact velocity of the ball (the ball's reaches the ground), in m/s. [ Note: the answer i not zero, but is negative. ] 2. (10 pts) A water balloon is dropped vertically from a height of 44 m above the sidewalk It lands on the feet of a When the balloon is released at person who is walking along the sidewalk at a constant velocity 0, the person is 12 m from the point of impac Ignoring air resistance effects, determine the walking speed of the person. [You should calculate that the time to impact is approx. 3 s.] 3. (20 pts) P 2.55. The first 30 s is not FF (what is the type of motion?). but from t until impact is FF 30s 1 of 1

Answer 1

HOMEWORKLIB POLICY, one full question done.