Question

When a person is walking in a straight line, they are also spinning as the Earth rotates, as well as revolving around the Sun. How do physicists avoid these complications in motion problems?They take all of these factors into account in their calculations.They establish a fixed frame of reference.They represent all of these factors as vectors.They only concern themselves with speed, not velocity.

Answer 1

They establish a fixed frame of reference.

When considering a motion on the earth, the earth will be spinning and revolving around the sun. But while solving a problem about motions of objects, we can avoid these problems by establishing a frame of reference where we can describe the motion of the object with ease.

Scientists usually consider the earth as the fixed frame of reference for the motion problem in which the object is moving on the earth. Through this, we can solve a motion problem without taking into account, the spinning of the earth and its revolution around the sun.

Thus, the correct answer is option 2.