An aircraft is moving with a velocity of 300ms-1. If all the forces acting on it are balanced, then
Correct answer: A. It continues to move with the same velocity.
- A. It continues to move with the same velocity.
- B. It will explode.
- C. It will gradually slow down.
- D. It will fall down instantly.
Explanation
The correct answer is that the aircraft continues to move with the same velocity. This is because, according to Newton's first law of motion, an object will maintain its state of rest or uniform motion unless acted upon by an unbalanced force. Since the forces are balanced, there is no net force acting on the aircraft to change its velocity. The other options are incorrect as they imply unbalanced forces or scenarios not supported by the given conditions.
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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