The gravity on the Moon is 1.62 m/s2 and the gravity on Earth is 9.8 m/s2. What is the weight of a 20-kg cannonball on the Moon and the Earth? Question 1 options: Moon 2.24 N; Earth 2.96 N Moon 32.4 N; Earth 196 N Moon 22.4 N; Earth 29.6 N Moon 3.24 N; Earth 1.96 N

Given parameters:

Gravity on the moon = 1.62m/s²

Gravity on earth = 9.8m/s²

mass of cannon ball = 20kg

Unknown:

weight of cannonball = ?

Solution:

The weight of an object is the vertical force on a body as a result of a gravity:

W = m x g

where m is the mass

g is the acceleration due to gravity

mass is the same everywhere if the amount of matter does not change.

Weight on moon = m x g = 20 x 1.62 = 32.4N

Weight on earth = m x g = 20 x 9.8 = 196N