Download Practical Measuring Speed

9Ka/3
Measuring speed
Name
Class
How fast do you walk?
9
K
a
distance
Complete these sentences using the words in the box. You may
need to use some words more than once.
Speed is a way of saying how
measure
something is
moving. To work out a speed we need to
and a
metres
a
. The formula is
= distance ÷
metres/second
speed
. If the
units for the distance are
the
fast
time
, and the units for
are seconds, the units for speed will be
.
P
Apparatus
●
●
Long tape measure
Chalk
●
●
Stopclock
Calculator
Method
1 Use the tape measure and chalk to mark out a
distance of 10 metres.
2 Use the stop clock to find out how long it takes to
walk 10 metres at your normal walking speed. Write your time in the table.
3 Now find out how long it takes if you walk 10 metres at your fastest speed.
Write your time in the table.
Recording your results
Now calculate your walking speeds. You need to use this formula:
speed = distance
time
Walking
Distance
(m)
Time
(s)
Speed
(m/s)
normal
fast
S
observing, knowledge
Exploring Science for QCA
Copymaster File 9
548
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