a boy has a mass of 25kg. what is his weight on earth? 25 kg 245 n 255 n 0 n

Explanation:

Step1: Recall weight - mass formula

Weight $W = mg$, where $m$ is mass and $g$ is acceleration due to gravity on Earth ($g = 9.8m/s^{2}$).

Step2: Substitute values

Given $m = 25kg$ and $g=9.8m/s^{2}$, then $W=25\times9.8$. $W = 245N$.

Answer:

245 N