You are currently in a stable orbit 9000 km (1km=1000m) from the center of planet Proxima Centauri B. According to the calculations done by NASA, Planet Proxima Centauri B has a mass of approximately 7.6x10^24kg.
Based on fuel consumption and expected material aboard the ship, your colony ship lander has a mass of approximately 1.1x10^5 kg.

1. Using Newton's Law of Universal Gravitation, determine what the force of gravity on your ship at that orbit be using the early measurements

2.Using Newton’s second law determine the acceleration of your lander due to gravity

3.Upon arrival, you measure the actual force of gravity to be 6x10^5 N, which is different from your calculated value in question 1. Identify 2 specific possible causes that would account for the difference in expected vs. actual values, and why they would affect the calculation.

we had a sub and she didn't even explain the work-the teacher hasn't even been on the calls for a few days so it's like ''what?'