UNIVERSE
SPACE EXPLORATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It was larger and could carry multiple spacecraft at once.
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It was more efficient and required less fuel.
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It was lighter and was made of less expensive materials.
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It had far more thrust, so it could be launched higher and travel farther.
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Detailed explanation-1: -The most significant improvement was B. It had far more thrust, so it could be launched higher and travel farther. This increased capability allowed the R-7 to be used for launching satellites and manned spacecraft, whereas the V-2 was primarily used as a weapon during World War II.
Detailed explanation-2: -Instead of a single combustion chamber on the V-2, the R-7 sported 20 main chambers and eight steering thrusters on its four boosters of the first stage and a single core booster of the second stage. The engines themselves represented a revolutionary departure from the V-2 technology.
Detailed explanation-3: -As the exhaust gases go in one direction, the rocket goes in the other to keep the total momentum of the system constant. This momentum change of the gases gives the rocket the “push” to go forward. We call this push, the thrust of the rocket, i.e. the force exerted on the rocket.
Detailed explanation-4: -Answer and Explanation: Rocket engines produce thrust in a vacuum by making use of Newton’s third law of motion. This law states that “for every action there is an equal and opposite reaction". This means when a rocket engine shoots out propellant at its tail the spaceship moves forward as a reaction to this.
Detailed explanation-5: -Like an airplane’s jet engine, a rocket creates thrust by expelling mass to take advantage of Sir Isaac Newton’s third law (see above). In both systems, combustion increases the temperature of gas in the engine, whereupon it expands and rushes out through a nozzle. The vehicle is accelerated in the opposite direction.