The rate of change of position at a specific point in time is called

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

What is magnetic flux? explain faraday's law of induction.

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87