A body is thrown vertically upwards with an initial velocity of 100m / s, after 4s of the launch its velocity is 60 m / s. 1. What is the maximum height reached? 2. At what time does the mobile travel that distance? 3. How long does it take to return to the starting point since it was launched? 4. How long does it take to reach heights of 300m and 600m? Use g = 10m / s²   i do have 1, 2, and 3 as another person answered. but i only need 4 --

Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter2: Motion In One Dimension
Section: Chapter Questions
Problem 2.6CQ: You throw a ball vertically upward so that it leaves the ground with velocity +5.00 m/s. (a) What is...
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A body is thrown vertically upwards with an initial velocity of 100m / s, after 4s of the launch its velocity is 60 m / s. 1. What is the maximum height reached? 2. At what time does the mobile travel that distance? 3. How long does it take to return to the starting point since it was launched? 4. How long does it take to reach heights of 300m and 600m? Use g = 10m / s²

 

i do have 1, 2, and 3 as another person answered. but i only need 4 -- 

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