Answer:
Her back pack will float because its density is less than the density of the water.
Explanation:
Because if the mass of the back pack is less than its volume, the density of the back pack will be less than 1 (one).
The formula for density is: [tex]density=\frac{mass}{volume}[/tex], therefore if the mass is smaller than the volume (denominator is larger than the numerator for the density) the quotient will render a number smaller than one.
That means that the object will float in a pool filled with water because the density of the water is one. The object with lesser density will float .
