Meteorites typically travel in very straight paths due to the high speeds at which they travel, governed by the laws of physics. However, they can appear to curve from our perspective on the ground. This apparent curvature is a result of a few factors:
Atmospheric Distortion: The Earth’s atmosphere can cause light to refract, altering our perception of the meteorite’s trajectory, particularly if it’s viewed at a low angle relative to the horizon.
Perspective: From the ground, especially if viewing across a large expanse, the curvature of the Earth can make a meteorite’s path appear arced. A meteorite might travel straight in space, but because we are observing it from the curved surface of the planet, it can appear to curve.
Observer’s Movement: If an observer moves quickly, such as in a car or train, the relative motion can also give the illusion of a curved path.
Variations in Trailing Particles: Sometimes, the light trail or debris tail behind a meteorite can disperse in a manner that appears curved due to atmospheric winds or individual particle characteristics affecting light reflection.

In essence, while meteorites travel in straight lines dictated by their velocities and gravitational influences, viewers can perceive these as curved due to atmospheric effects and observational perspectives.