Posted by **Lucy** on Tuesday, September 21, 2010 at 4:14pm.

A bus makes a 10 mile journey throuh town. Its top speed is 30mph and its mean speed its mph.

Explain why these speeds are different?

- Science -
**bobpursley**, Tuesday, September 21, 2010 at 4:17pm
I only see two speeds. Surely you know why top speed is greater than mean speed.

- Science -
**Lucy**, Tuesday, September 21, 2010 at 4:21pm
A bus makes a 10 mile journey throuh town. Its top speed is 30mph and its mean speed its 10 mph.

Explain why these speeds are different?

- Science -
**Ms. Sue**, Tuesday, September 21, 2010 at 4:31pm
The bus was probably in traffic that moved at much less than 10 mph. It probably rarely hit 30 mph.

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