8
For example: 34 0000 = 3.4 10 (5 spaces moved to the left, and 3 is the first digit)
5
B. If the number is less than 1
(1) Move the decimal point to the right after the first digital point to give a number between 1
and 9.
(2) The spaces moved are shown as a power of ten.
(3) The power is negative.
3
For example: 0.00378 = 3.78 10 ( 3 spaces moved to the right, and 3 is the first digit)
Example 1.3
Write the following numbers in scientific notation
(1) Diameter of earth is 12 800 000 m
=
_______________ m
(2) Mass of a human is 78 kg
= _______________ kg
(3) Length of a virus is 0.000 03 cm
= _______________ cm
1.4 Properties of Motion: speed, velocity, and acceleration
1.4.1 Speed
Speed