1) A 70.0-kg astronaut pushes to the left on a spacecraft with a force in "gravity-free"space. The spacecraft has a total mass of 1.0 x 104 kg. During the push, the astronautaccelerates to the right with an acceleration of 0.36 m/s2. Which one of the followingstatements concerning this situation is true?a. The spacecraft does not move, but the astronaut moves to the right with aconstant speed.b. The force exerted on the astronaut is larger than the force exerted on thespacecraft.c. The astronaut stops moving after he stops pushing on the spacecraft.d. The velocity of the astronaut increases while he is pushing on the spacecraft.e. The force exerted on the spacecraft is larger than the force exerted on theastronaut.1.

Answered: Image /qna-images/answer/46eb742b-0b40-4d4f-be15-3fe10644e05a.jpg

Answered: 1) A 70.0-kg astronaut pushes to the…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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On 24 November 2021 the DART (Double Asteroid Redirection Test) spacecraft was launched. Its mission is to assess the ability of an impact to deflect the path of an asteroid. DART was launched on a Falcon 9 rocket. At launch a Falcon rocket has a mass of 555 000 kg and generates a force of 7.6 x 106 N. A. Neglecting the effect of gravity, what is the initial acceleration of the rocket? Give your answer to an appropriate number of significant figures. B. Assuming that the initial acceleration remains constant, how fast will the rocket be moving after 2 seconds? C. In practice, as the rocket burns fuel, its mass decreases. Assuming the thrust remains the same, how would your answer to part (ii) change? Would the speed after 2 seconds be lower, the same or higher?
Three blocks rest on a frictionless, horizontal table (see figure below), with m₁ block 1, and the acceleration of all three blocks is found to be 3.2 m/s². (a) Find m₂. m1 kg m₂ m3 = 5 kg and m3 = 14 kg. A horizontal force F = 117 N is applied to (b) What is the magnitude of the normal force between blocks 2 and 3? N
What’s the answer to A B and C?
A 2.80-kg object is moving in a plane, with its x and y coordinates given by x = 2t² - 4 and y = 2t³ + 3, where x and y are in meters and t is in seconds. Find the magnitude of the net force acting on this object at t = 2.45 s. 33 X If you know the position of an object as a function of time, you can calculate the acceleration as a function of time using calculus methods. N
A particle with mass m = 4.20 kg accelerates according to a = (−3.50 + 2.20) m/s2. (a) What is the net force acting on the particle? (Express your answer in vector form.) F =?N (b) What is the magnitude of this force ?N
Three forces acting on an object are given by F1 = (−2.2î + 5.50ĵ) N, F2 = (4.85î − 2.1ĵ) N and F3 = (−47.5î) N. The object experiences an acceleration of magnitude 3.65 m/s2. i. What is the direction of the acceleration? (counterclockwise from the +x-axis) ii. What is the mass of the object? iii. If the object is initially at rest, what is its speed after 20.0 s? iv. What are the velocity components of the object after 20.0 s? (Let the velocity be denoted by v.
You work at a garden store for the summer. You lift a bag of fertilizer with a force of 114 N, and it moves upward with an acceleration of 0.810 m/s². (a) What is the mass (in kg) of the fertilizer bag? kg (b) How much (in N) does the fertilizer bag weigh? N
Figure 41. VA 276-kg glider is being pulled by a 1 950-kg jet along a 2.20 m/s² to horizontal runway with an acceleration of a the right as in Figure P4.41. Find (a) the thrust provided by the jet's engines and (b) the magnitude of the tension in the cable connecting the jet and glider. Figure P4.41
4. a. There is a forward force of 4962.5 N on the front train car from the engine. There is no friction. What is the acceleration of the train? m₁ = 1070 kg, m₂ = 450 kg, and m3 = 1356.25 kg. m3 Previous submissions: b. What is T₁? Previous submissions: c. What is T2? Previous submissions: m2 m₁

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