4. A stone is thrown horizontally. In 3 seconds after the stone began to move, the numerical value of its velocity was 1.25 times its initial velocity. Find the initial velocity of the stone. Free fall acceleration is g = 10 m/s?. Disregard the resistance of the air. %3D A) 40 m/s. B) 45 m/s. C) 50 m/s. D) 55 m/s.

4. A stone is thrown horizontally. In 3 seconds after the stone began to move, the numerical value of its velocity was 1.25 times its initial velocity. Find the initial velocity of the stone. Free fall acceleration is g = 10 m/s?. Disregard the resistance of the air. %3D A) 40 m/s. B) 45 m/s. C) 50 m/s. D) 55 m/s.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter2: Motion In One Dimension

Section: Chapter Questions

Problem 71AP: An ice sled powered by a rocket engine sum from rest on a large frozen lake and accelerates at + 40...

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