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Zorluk: ZorNewton's First Law (Inertia)

Two astronauts are conducting a repair mission in a zero-gravity vacuum environment. A massive 800 kg communication satellite is drifting in a straight line at a constant velocity of 1 m/s. An astronaut maneuvers in front of the satellite and attempts to stop it by pushing against it with her hands. She finds it extremely difficult to bring the satellite to a halt.

Based on the principles of mechanics, which of the following best explains why the weightless satellite is so difficult to stop?

  1. The satellite's significant mass provides a high degree of inertia, which strongly resists any changes to its constant velocity.Cevap
  2. B
    The satellite's constant motion generates an active inertial force that continuously pushes against the astronaut to maintain its speed.
  3. C
    The satellite is in a zero-gravity environment but retains its heavy weight, which creates the physical resistance the astronaut feels when pushing.
  4. D
    The astronaut's push creates an equal and opposite reaction force from the satellite that cancels out her attempt to decelerate it.

Cevap

The satellite's significant mass provides a high degree of inertia, which strongly resists any changes to its constant velocity.
According to Newton's First Law, inertia is the property of an object that resists any change to its velocity. The amount of inertia an object possesses is directly proportional to its mass, regardless of gravitational pull. Therefore, an 800 kg satellite requires a significant force (or a prolonged period of time) to decelerate, purely because of its high mass and the resulting inertia.

Adım Adım Çözüm

1
Analyze the environmental conditions described in the scenario.
The scenario takes place in a zero-gravity vacuum, meaning there is no weight and no air resistance acting on the satellite.
Understanding the environment helps eliminate forces like gravity and friction as contributing factors to the resistance felt by the astronaut.
2
Identify the relevant mechanical property of the satellite.
Although the satellite is weightless, it has a mass of 800 kg.
Mass is an intrinsic property of matter that remains constant regardless of gravitational pull.
3
Apply Newton's First Law of Motion to the situation.
The satellite's large mass means it has high inertia, which naturally resists any acceleration or deceleration.
Inertia is the tendency of an object to resist changes in its state of motion, and it is directly proportional to an object's mass.

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