General Physics Problem (Velocitys)

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SUMMARY

The problem involves a race between a hare and a tortoise over a distance of 1.00 km. The tortoise moves steadily at a maximum speed of 0.200 m/s, taking 5,000 seconds to complete the race. The hare runs at a maximum speed of 8.00 m/s, reaching 800 meters in 1,000 seconds before stopping. To determine how close the hare can let the tortoise approach before resuming the race and winning in a photo finish, calculations reveal that the hare can taunt the tortoise for a maximum of 250 seconds, allowing the tortoise to cover 50 meters during that time.

PREREQUISITES
  • Understanding of basic kinematics, including speed, distance, and time calculations.
  • Familiarity with the concept of relative motion in competitive scenarios.
  • Ability to solve equations involving constant speed and time intervals.
  • Knowledge of the principles of photo finishes in races.
NEXT STEPS
  • Study the equations of motion for objects moving at constant speeds.
  • Learn about relative velocity and its applications in competitive scenarios.
  • Explore more complex race scenarios involving multiple competitors and varying speeds.
  • Investigate the mathematical modeling of race outcomes using calculus.
USEFUL FOR

This discussion is beneficial for students studying physics, particularly those focusing on kinematics, as well as educators looking for practical examples of motion and speed in competitive contexts.

denverhockeyfan
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. Homework Statement
A hare and a tortoise compete in a race over a course of 1.00km long. The tortoise crawls straight and steadily at its max speed of 0.200 m/s toward the finish line. the hare runs at its max speed of 8.00 m/s toward the goal for .800km and then stops to taunt the tortoise. how close to the goal can the hare let the tortoise approach before resuming the race, which the tortoise win in a photo finish? assume that, when moving, both animals move steadily at there respective max speeds.

3. The Attempt at a Solution
I kinda feel stupid. I know it takes 5,000 seconds for the tortoise to go 1000m, 4,000 to go 800m, and 1,000 to go the last 200m.
It takes 1,250 seconds for the hare to go the whole 1000m, 1,000 seconds to go too the 800m mark, and 250 seconds to go the last 200m of the race.

Just not sure how to put this together.
 
Last edited:
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It easier if you split it up and work from both ends at the same time. The hare went .8km and then stopped. Where is the tortoise then? If the race ended at a photo finish and the hare started again 200m from the finish line, how far did the tortoise run after the hare started again? The difference between those two tortoise positions is how far the tortoise ran while the hare was taunting. How long was it taunting?
 

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