# physics

posted by .

A person is flying through space with person B exactly 186000 miles behind. When person A wants to accelerate, he uses a flashlight to signal person B.This means they accelerate together and remain exactly 186000miles apart. Person A wants exactly 1 sec to allow light to reach Person B before he accelerates, so they remains 186000 miles apart from their perspective. What observation will a person standing on ground make?

• physics -

If there is the required 1 s delay by person A, then they accelerate together. A person on the ground sees the same thing.

The distance between A and B may be slighly less than 186,000 miles, seen from the ground, depending upon the speed and direction of motion. The measured 1 second delay by A may also be shorter.

## Similar Questions

1. ### physics

Need help with this short physics question there is a race betwen person A and person B. They both start at the same time, but B initial position is 10m left of peron A. person A travels 100 meters right in 20 seonds, Person Btravels …
2. ### physics

A rescue helicopter lifts a 85.2-kg person straight up by means of a cable. The person has an upward acceleration of 0.764 m/s2 and is lifted from rest through a distance of 12.5 m. (a) What is the tension in the cable?
3. ### Physics

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. …
4. ### physics

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. …
5. ### Physics

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. …
6. ### physics

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. …
7. ### physics

A rescue helicopter lifts a 85.8-kg person straight up by means of a cable. The person has an upward acceleration of 0.643 m/s2 and is lifted from rest through a distance of 13.1 m. (a) What is the tension in the cable?
8. ### English

1. Take exercise on a regular basis, and you will be a happy person. 2. Earn a lot of money, and you will be a happy person. 3. Drive in the country, and you will be a happy person. 4. Play the violin, and you will be a happy person. …
9. ### English

A narrator who uses pronouns such as he, she, and they and knows all of the charactersâ€™ thoughts and actions is a. first person b. second person c. third person limited d. third person omniscient***
10. ### English

1. Is it OK to tell a lie to make a person happy?

More Similar Questions