A1 2. For each situation, identify whether the person is in an inertial or a non-inertial frame of reference. Explain your choices. a. a taxi driver accelerating away from a stop light b. a child riding around the outer edge of a carousel c. a race car travelling at 200 km/h down a straight section of track d. a driver backing straight back at a slow and constant speed e. a student riding swiftly down the first hill of a roller coaster 3. A student tries using two white LEDs as light sources in a double-slit interference experiment. Unfortunately, the student does not see the expected bright fringes. Explain why. 4 . Match each term below with the most appropriate description. (a) hypothesis (i) an explanation that has been tested and confirmed as a general principle to explain a natural phenomenon (b) postulate (ii) a generally accepted formal statement about the occurrence of a natural phenomenon (c) scientific theory (ii) a predicted answer to a testable question (d) scientific law (iv) a statement assumed to be true from which a theory is developed 5. Use the wave equation to calculate the frequency of each of the wavelengths below. a. 640 nm b. 510 nm c. 320 nm 6. Which wavelength from the previous question has the highest energy