When a body falls to the earth, the earth also move up to meet it but the earth motion is not noticeable. why?

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0

What is the magnitude of the gravitational force acting on the earth due to the sun?

7types of electromagnetic waves from lowest to highest frequency