Please help with this question and explain clearly. Thank you!

Question 1: a) You are traveling in a spaceship, headed towards Earth, and you hold a ball at arm's length. When you let go of the ball it falls to the oor as shown in Figure 1. What does this obser- vation tell you about the acceleration of the spaceship? b) If you shine a white light out of the window of the spaceship towards Earth. At what speed will the light appear to travel and why? c) What colour will the light appear to be to observers on Earth, and why? Figure l: The setup for your ball-dropping experiment on the spaceship in Question 1