Question

An Earth worm Moves at a

distance of 45cm in 90 secondo
find the speed of the earth
worm

(I need to know how to lay it out as well)

Answer 1

if the units is in m/s

Explanation:

first work out using this triangle.

distance= speed x by time

so if we're trying to find out the speed we reaarange the triangle to :

distance

---------------------

speed x time

so speed = distance divided by time

distance = 45cm

divided by time = 90 seconds

But the units are cm and should be metres per second

change 45cm to m

that is 45cm = 45/ 100 = 0.45

0.45/ 90= 0.005cm

answer = 0.005 metres per second( m/s)

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