Solved: A rocket blasts off from rest and attains a speed
Chapter 4, Problem 4.136(choose chapter or problem)
A rocket blasts off from rest and attains a speed of 45 m/s in 15 s. An face of the earth. (a) Determine the magnitude of the gravitational force exerted on each by the earth. (b) Calculate the magnitude of the acceleration of each object when released. 21. Mars has a mass of 6.46 1023 kg and a radius of 3.39 106 m. (a) What is the acceleration due to gravity on Mars? (b) How much would a 65-kg person weigh on this planet? 22. On earth, two parts of a space probe weigh 11 000 N and 3400 N. These parts are separated by a center-to-center distance of 12 m and may be treated as uniform spherical objects. Find the magnitude of the gravitational force that each part exerts on the other out in space, far from any other objects. 23. A raindrop has a mass of 5.2 107 kg and is falling near the astronaut has a mass of 57 kg. What is the astronauts apparent weight during takeoff?
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