Particle P is able to slide within a smooth slot cut into a disk. The disk is rotating at a constant rate, Ω. We desire to understand the reaction force of the disk slot on the particle as the ...

Isaac Newton's First Law of Motion states, "A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force." What, then, happens to a body ...

Astronomers have attempted to explain the non-gravitational acceleration of comet 3I/ATLAS, our third confirmed interstellar ...

Listen to the full series on BBC Sounds. Newton's first law can also be used to explain the movement of objects travelling with non-uniform motion. This includes situations when the speed changes, the ...