SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same.
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The rocket is at rest until ignition.
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The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
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None of the above
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Detailed explanation-1: -In another example, rockets move forward by expelling gas backward at high velocity. This means the rocket exerts a large backward force on the gas in the rocket combustion chamber, and the gas therefore exerts a large reaction force forward on the rocket. This reaction force is called thrust.
Detailed explanation-2: -Newton’s Third Law states that “every action has an equal and opposite reaction". In a rocket, burning fuel creates a push on the front of the rocket pushing it forward. This creates an equal and opposite push on the exhaust gas backwards.
Detailed explanation-3: -Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first. His third law states that for every action (force) in nature there is an equal and opposite reaction.
Detailed explanation-4: -Newton’s third law of motion states that to every action there is an equal and opposite reaction. Similarly, when a rocket moves, it exerts the action force on the gases to expel them backwards which in turn exerts an equal and opposite reaction force to move the rocket forward.
Detailed explanation-5: -Action-reaction forces are equal and opposite forces that act on different objects, so they don’t cancel out. In fact, they often result in motion. Think about Jerod again. He applies force with his foot to the ground, whereas the ground applies force to Jerod and the skateboard, causing them to move forward.