Charlie stands on a station and the full London bound through train rushes past. Alice, sitting on the London-bound train...

Physics Narrative 14-16

Just push for a while, causing a change in the velocity: that adds to the quantity of motion.

Physics Narrative 14-16

This idea that something is given to an object when you push or pull on it and affect its motion is common. This is often said...

Physics Narrative 14-16

Filling or emptying kinetic stores necessarily involves speeding up or slowing down mass. It's an accumulation of the power in...

Physics Narrative 14-16

Here is a particular, but common, example where energy sloshes from store to store as a result of the actions of forces on...

Physics Narrative 14-16

Alice, Bob or Charlie can record the velocity of an object. Combining these measures with the mass of the object (invariant–so...

Physics Narrative 14-16