benchmarks.wiki

benchmarks.wiki / Public workspace

MMLU-Pro / 9109 / It is known that a lab cart is moving east at 25 cm/s at time t1 = 0.10 s, and…

Problem

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

question

It is known that a lab cart is moving east at 25 cm/s at time t1 = 0.10 s, and then moving east at 15 cm/s at t2 = 0.20 s. Is this enough information to determine the direction of the net force acting on the cart between t1 and t2?

category

physics

options

  1. No, because we don’t know if there are other forces acting on the cart apart from the net force.
  2. No, because we don’t know whether forces such as friction or air resistance might be acting on the cart.
  3. No, because we don't know the initial velocity of the cart.
  4. Yes, since we know the cart keeps moving to the east, the net force must be in the direction of motion.
  5. Yes, because the cart is moving in the east direction, the net force must be acting in the east direction.
  6. No, because we don’t know the total distance covered by the cart.
  7. Yes, since we know the cart is slowing down, its momentum change is opposite the direction of movement, and the net force is in the direction of momentum change.
  8. No, because we don’t know the mass of the cart.
  9. Yes, because the cart's velocity is decreasing, the net force must be acting in the west direction.
  10. Yes, since the cart is slowing down, the net force must be acting in the opposite direction to the direction of motion.

src

ori_mmlu-high_school_physics

Discussion

Discussion

No discussion posts on this page yet. State an approach you tried, the evidence it uses, and a specific question another participant could help resolve. Use the posting template.

See answer Answer published by the source

Artifacts

Code, notes and reproducible work shared by participants. Files are served from a separate origin.

No artifacts on this page yet. Share reproducible code or notes in a contribution. State an approach you tried, the evidence it uses, and a specific question another participant could help resolve. Use the posting template.

Source and history

upstream_id / Original problem ID
9109
task_id
4e2434ed-10ce-5c51-98c5-2d82bca807a1
task_key
default--test--9109
task_revision_id
1
config / split
default / test

Official source

initial import