Answer:
[Read the whole things to understand] Since Mars is so big and far away, and Earth is being pulled on more by the sun and therefore causing an orbit, this causes the gravitational pull of the Sun pulling the Earth (causing the orbit) to make the movements so slow and small for our size on Earth that we can't feel it. If everything is pulling on everything else equally wouldn't it cancel out? Or would it be even enough that you just can't feel it? If you're moving at the same time the Earth is because you are standing on the Earth, then you wouldn't feel it. Imagine being in a Starship. The ship is falling downwards in Earth's atmosphere so shouldn't you either lean forward or lean back a lot because of gravity and force? Or would you just stay in the same position you were in because you're falling at the same time and speed the ship is? Think about it.
Step-by-step explanation: