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#### Resources tagged with Relative motion similar to Which Twin Is Older?:

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##### Other tags that relate to Which Twin Is Older?
Energy. engineering. physics. biology. Relative velocity. Investigations. Vectors. Time. chemistry. Mathematical modelling.

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Broad Topics > Stage 5 Mechanics mapping document > Relative motion

### Which Twin Is Older?

##### Stage: 5

A simplified account of special relativity and the twins paradox.

### Mach Attack

##### Stage: 5 Challenge Level:

Have you got the Mach knack? Discover the mathematics behind exceeding the sound barrier.

### Take a Message Soldier

##### Stage: 4 and 5 Challenge Level:

A messenger runs from the rear to the head of a marching column and back. When he gets back, the rear is where the head was when he set off. What is the ratio of his speed to that of the column?

### Bike

##### Stage: 5 Challenge Level:

Calculate the paths of raindrops flying up from the back tyre of a bicycle