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In a 100 m race B is given a 4 second head start. A runs at 10 m/s and B at 8 m/s. What is the result?

Competition practiceRaces & Circular Tracks
  • ADead heat
  • BB wins by 15 m
  • CA wins by 15 m
  • DB wins by 12 m

Step-by-Step Solution

B finishes at s. A starts at 4 s and finishes at 14 s. At 12.5 s A has run m, so B wins by 15 m.
Answer: B) B wins by 15 m

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