7. Question 7 Which of the world lines below represents everything that happens (at all locations) in a certain frame of reference at a given time t? (The arrows on…
11. Question 11 What is the inertia of an object? 1 point It is a combination of the velocity of an object and the direction it is moving. It…
2. Question 2 Consider Bob on Earth. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. Which diagram represents Alice’s world…
12. Question 12 Alice creates a machine that can shoot basketballs in a horizontal direction. Using a radar gun, Bob measures the speed of the basketball coming from the machine…
4. Question 4 Which world line represents an object moving to the left at constant velocity along the x axis? 1 point
1. Question 1 What is the simplest scientific meaning of the phrase “time is the fourth dimension”? 1 point That an event that occurs can be specified using a…
11. Question 11 What is a non-inertial frame of reference? 1 point It is a frame of reference that moves sideways compared to another frame of reference. It is…
10. Question 10 Of the world lines shown below, which represents an object moving with the highest velocity? 1 point
8. Question 8 Consider Bob on Space Station Omega. At time t = 0, Alice flies by in her spaceship at constant velocity, heading to the right. She then quickly…
4. Question 4 Which world line represents an object that started at a nonzero location on the x axis and then moved to the right at constant velocity? 1 point…
