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Question 1: Which of the following provides evidence that the thermal energy of an object is decreasing? Select one: a. Its speed is increasing b. ts speed is decreasing C. Its temperature is increasing d. Its temperature is decreasing Question 2: A block is observed to slide across the table, slowing down to a stop The homework slide for this question shows the four possible S/R energy diagrams for this interaction. Which one of the four S/R energy diagrams might plausibly describe the interaction between the block and the table? Contact push/pul Interaction Contact push/pull Interaction laole | | lable energy Block Block Energy ecrease in KE and increase in TE in KE and increase in TE in TE in TE Contact push/pull Interaction Contact pushlpul Interaction Table Block Cecrease C IncreaseIncrease D inT and in KE Select one a. Energy diagram A (upper left) b. Energy diagram B (upper right) O C. Energy Diagram C (lower left) d. Energy diagram D (lower right) Question 3: A chair is pushed across the floor, and then let go. The chair comes to a very quick stop. A previous student wrote an explanation narrative for why the chair slows down after being let go. Read her evaluation, and then evaluate it for accuracy. (1) There is a contact push/pull interaction between the chair and floor. (2) During the interaction, mechanical energy is transfered from the chair to the floor. (3) The kinetic energy of the chair decreases while its thermal energy increases, as well as the thermal energy of the floor. (4) Because the thermal energy of the chair increases, it slows down. This explanation is... Select one: a. Accurate as written b. Not accurate because sentence #1 is not correct. c. Not accurate because sentence #2 is not correct. d. Not accurate because sentence #3 is not correct. e. Not accurate because sentence #4 is not correct. f, Not accurate because more than one sentence is not correct. @