Answer:
2.25 kg
Explanation:
Force can be found using the following formula.
[tex]f=m*a[/tex]
Rearrange the formula for [tex]m[/tex], mass, by dividing both sides of the formula by a.
[tex]\frac{f}{a}=\frac{m*a}{a}[/tex]
[tex]\frac{f}{a}=m[/tex]
The mass can be found by dividing the force by the acceleration. The force is 18 Newtons. 1 Newton is equal to 1 kg m/s², so 18 Newtons is equal to 18 kg m/s². The acceleration is 8 m/s².
[tex]f= 18 kgm/s^2\\a=8 m/s^2[/tex]
Substitute the values into the formula.
[tex]m=\frac{f}{a}[/tex]
[tex]m=\frac{18 kg m/s^2}{8m/s^2 }[/tex]
Divide. Note that the kg m/s² in the numerator and denominator will cancel each other out.
[tex]m=\frac{18kg}{8}[/tex]
[tex]m= 2.25kg[/tex]
The mass of the book is 2.25 kilograms.
