Given : We have given sets of speed 5.0 m/s, -10.0 m/s, 520.0 cm/s, 18.0 cm/s ,2.0 cm/s .
To Find : Order the given speed from fastest to lowest .
Solution :
First of all we have to convert all the given speed in same units .
We know , 1 m = 100 cm .
Therefore , speed in units cm/s is :
500 cm/s , -1000 cm/s , 520 cm/s , 18 cm/s , 2 cm/s .
We know , that -ve and +ve sign only indicates the direction .
So , comparing their magnitude , we get the order as :
-1000 cm/s , 520 cm/s , 500 cm/s , 18 cm/s , 2 cm/s .
Hence , this is the required solution .