What is required for an object to change its state of uniform motion?

Study for the OSAT Physical Science Test. Practice with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

For an object to change its state of uniform motion, an external force is required. According to Newton's first law of motion, an object in uniform motion will remain in that state unless acted upon by an outside force. This principle is fundamental in understanding how forces interact with objects in motion.

When a force is applied, it can result in a change in the object's speed or direction, thus altering its state of motion. Without any external influences, an object will continue moving at a constant velocity. This concept underpins various physical phenomena, from everyday experiences to more complex systems in physics.

The other options do not directly address the requirement for altering motion. For example, greater mass does not inherently cause a change in motion unless accompanied by a force, and changes in temperature are more relevant to the kinetic energy of particles rather than the motion of a macroscopic object. Similarly, a restriction in space may limit movement but does not directly change the motion of an object unless a force is applied to exert that limitation.

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