Question

Why a teacher moving in the class is doing work but a child standing and reading a book is not doing any work​

Answer 1

motion

Explanation:

because the teacher moving is the class is at motion and the child standing and reading is at rest thats why teacher is doing work while student is not

Answer 2

Answer:

beacause in the first case , there is , in 2nd case there is no movement  

Explanation:

 we will consider as work done if there is any movement