Question

If the Earth's gravitational force causes a falling 93 kg student to accelerate downward at 9.8 m/s2, determine the upward acceleration of the Earth during the student's fall. Take the mass of the Earth to be Mearth = 5.98 x 1024 kg. Answer in units of m/s2.

Answer 1

For each reaction,there is an equal and opposite.....

ForceEarth=-Forcestudent
massEarth*acceleration= massStudent*g

acceleration= massSTudent/massEarth * 9.8m/s^2