Question

10. A boy weighs 475 N. What is his mass? (acceleration due to gravity on Earth is 9.8m/s2 = g)

Answer 1

Answer: mass = 48.47 kg.

Step-by-step explanation:

Formula : Weight = mg , where m = mass of body , g= acceleration due to gravity .

Given: Weight = 475 N

`g= 9.8\ m/s^2`

Substitute all values in formula , we get

`475= m *9.8\\\\\Rightarrow\ m = (475)/(9.8)\\\\\Rightarrow\ m \approx 48.47\ kg`

Hence, his mass = 48.47 kg.