A negative gradient shows the rate of “slowing down” or deceleration. Velocity-time graphs show velocity on the vertical axis. Acceleration is still represented by the gradient. Key fact The gradient ...

In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving.

A recent astronomical discovery has left scientists puzzled as they track an object accelerating in a manner that defies the current understanding of physics. This enigmatic object, potentially ...

Suppose you have a cylinder on an ramp and you let it start rolling down. What will be its acceleration? Great question, right? I like this because it brings in many different concepts in introductory ...

The hyperdrive from Star Wars appears to depict an ultra-relativistic motion through space, extremely close to the speed of light. Under the laws of relativity, you neither reach nor exceed the speed ...

3I/ATLAS shows signs of alien engine and non-gravitational acceleration as it passes near the Sun, drawing global attention from scientists and space agencies. Harvard astrophysicist Avi Loeb ...