Question

what is the weight, on earth, of a book with a mass of 1.5 kg?
1.5 n
6.5 n
11.3 n
14.7 n

Explanation:

Step1: Recall weight - mass formula

The formula for weight is $W = mg$, where $W$ is weight, $m$ is mass and $g$ is the acceleration due to gravity on Earth ($g=9.8\ m/s^{2}$).

Step2: Substitute values

Given $m = 1.5\ kg$ and $g = 9.8\ m/s^{2}$, then $W=1.5\times9.8$.
$W = 14.7\ N$

Answer:

14.7 N