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MMLU-Pro / 9893 / A racing car passes one end of the grandstand at a speed of 50 ft/sec. It slows…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A racing car passes one end of the grandstand at a speed of 50 ft/sec. It slows down at a constant acceleration a\ding{217}, such that its speed as it passes the other end of the grandstand is 10 ft/sec. (a) If this pro-cess takes 20 seconds, calculate the acceleration a\ding{217} and (b) the length of the grandstand .

category

physics

options

  1. Acceleration is -1 ft/sec^2 and the length of the grandstand is 800 ft
  2. Acceleration is -3 ft/sec^2 and the length of the grandstand is 500 ft
  3. Acceleration is -2 ft/sec^2 and the length of the grandstand is 500 ft
  4. Acceleration is -1 ft/sec^2 and the length of the grandstand is 700 ft
  5. Acceleration is -0.5 ft/sec^2 and the length of the grandstand is 800 ft
  6. Acceleration is -1.5 ft/sec^2 and the length of the grandstand is 750 ft
  7. Acceleration is -2 ft/sec^2 and the length of the grandstand is 600 ft
  8. Acceleration is -2 ft/sec^2 and the length of the grandstand is 700 ft
  9. Acceleration is -1.5 ft/sec^2 and the length of the grandstand is 650 ft
  10. Acceleration is -2.5 ft/sec^2 and the length of the grandstand is 550 ft

src

stemez-Physics

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Source and history

upstream_id / Original problem ID
9893
task_id
229b40b1-c3ec-5909-87ca-25e1679d0dcb
task_key
default--test--9893
task_revision_id
1
config / split
default / test

Official source

initial import