Imagine that you are watching an ice-skater. She stands motionless in the centre of the ice before pushing off and gliding out...

Physics Narrative 11-14

Consider an object moving on a horizontal surface, maybe a pencil case that you are pushing across the table. For such...

Physics Narrative 11-14

Here are four situations where a non-zero resultant force predicts a change in motion:

Physics Narrative 11-14

An important point to recognise in thinking about objects speeding up and slowing down is that the motion changes only for as...

Physics Narrative 11-14

Driving forces can be exerted by many different parts of the object's environment.

Physics Narrative 11-14

Please take care with acceleration . This note explains some concerns.

Physics Narrative 11-14

The same ideas about resultant forces can be used to explain the motion of a skydiver falling through the air. The skydiver...

Physics Narrative 11-14

Physics Narrative 11-14

Throw a tennis ball harder and it leaves your hand faster. No surprise there–we're just describing an everyday occurrence in...

Physics Narrative 14-16