) A ball is thrown vertically upward from the surface of the earth with an initial velocity of 30 m/s. Two seconds later a second ball is thrown upward from the same point with a velocity of 24 m/s. Derive an expression for the relative position, velocity, and acceleration of ball 1 with-respect-to ball 2 for time t≥2sec. (neglect air resistance and assume acceleration of gravity is 9.81 m/s2.

) A ball is thrown vertically upward from the surface of the earth with an initial velocity of 30 m/s. Two seconds later a second ball is thrown upward from the same point with a velocity of 24 m/s. Derive an expression for the relative position, velocity, and acceleration of ball 1 with-respect-to ball 2 for time t≥2sec. (neglect air resistance and assume acceleration of gravity is 9.81 m/s2.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.19P: Plot the earths gravitational acceleration g(m/s2) against the height h (km) above the surface of...

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A ball is thrown vertically upward from the surface of the earth with an initial velocity of 30 m/s. Two seconds later a second ball is thrown upward from the same point with a velocity of 24 m/s. Derive an expression for the relative posi- tion, velocity, and acceleration of ball 1 with-respect-to ball 2 for time t≥ 2 sec. (neglect air resistance and assume acceleration of gravity is 9.81 m/s². For the two balls thrown in problem 6, how far above the earth will the two balls meet (i.e. what is their height when they pass each other)?
At a certain point in the reentry of the space shuttle into the earth's atmosphere, the total acceleration of the shuttle may be represented by two components. One component is the gravitational acceleration g -9.65 m/s² at this altitude. The second component equals 10.98 m/s² due to atmospheric resistance and is directed opposite to the velocity. The shuttle is at an altitude of 46.1 km and has reduced its orbital velocity of 28300 km/h to 16230 km/h in the direction 0-1.92°. For this instant, calculate the radius of curvature of the path and the rate i at which the speed is changing. Answers: p- V= 1 km m/s²
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