Question

What is the mass of a falling rock if it hits the ground with a force of 174 Newtons?

Answer 1

17.8 kg

Step-by-step explanation:

The force with which the rock hits the ground is the force of gravity, which is also known as weight of the object, and whose magnitude is given by:

`W=mg`

where

m is the mass of the object

g is the acceleration of gravity

In this problem, we know the weight of the rock

W = 174 N

We also know the acceleration of gravity,

`g=9.8 m/s^2`

So, we can find the mass of the rock:

`m=(W)/(g)=(174)/(9.8)=17.8 kg`