According to the United Nations, there are <em>54 </em>countries in Africa today (late 2018).
Answer:
The acceleration of the bag of sand is
.
Explanation:
We have,
Mass of a bag of sand is 100 kg
Weight of the bag of sand is 100 N
It is required to find the acceleration of the bag when it is dropped. The weight of an object is given by :

When it is dropped, a = g

So, the acceleration of the bag of sand is
.
This statement is true. The point located at the geometric center of an object is indeed called the object's center of gravity. Center of gravity is the average of the weight of a resultant of the parallel forces, including all the particles that is passing through its body.