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Question about Kinematic: Position, Acceleration, and Velocity

Subject Physics

Physics

Source Originais Teachy

Originais Teachy

Topic Kinematic: Position, Acceleration, and Velocity

Kinematic: Position, Acceleration, and Velocity

Difficulty Hard

Hard

(Originais Teachy 2023) - Question Hard of Physics

A spaceship is moving in the vacuum of space. It starts from rest and then begins accelerating in a straight line. Without any external force, the spaceship continues to increase its velocity. Considering the principles of physics and the concepts of position, acceleration, and velocity, can you explain why this scenario is possible or not? Please consider the relationship between these concepts and the absence of friction or air resistance in space. Also, describe what would happen if the spaceship suddenly stopped accelerating but continued to move.

The spaceship cannot continue to increase its velocity without an external force acting on it, even in the absence of friction and air resistance.

The spaceship will stop moving as soon as the engines are turned off because there are no external forces to keep it moving.

This scenario is possible due to the absence of friction and air resistance in space. The spaceship can continue to increase its velocity while the engines are on (i.e., it is accelerating). Once the engines are turned off, the spaceship will continue to move at a constant velocity.

The spaceship will start to slow down once the engines are turned off due to the presence of gravitational forces.

Even in the absence of friction and air resistance, the spaceship will not move at a constant velocity once the engines are turned off because it will lose momentum.

Answer sheet:

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