An object thrown in arbitrary direction, in space with an initial velocity and moving freely under gravity will follow:
Correct answer: D. A parabola
- A. A circle
- B. A straight line
- C. A hyperbola
- D. A parabola
Explanation
The explanation is given below: When an object is thrown in an arbitrary direction in space with an initial velocity and is moving freely under gravity, its trajectory is a parabola. This is based on the laws of projectile motion. The force acting on the object is the gravitational force, and the object's motion can be described by the equations of motion, which result in a parabolic path. In a uniform gravitational field, the only force acting on the object is gravity. The horizontal motion is uniform, and the vertical motion is subject to constant acceleration due to gravity. The combination of these motions results in a parabolic trajectory. Therefore, the correct option is D) A parabola.
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About Force and Motion
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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