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Q: An athelete runs for some time before the high jump so that the inertia of the –––––– helps him take the long jump.
  • A. rest
  • B. direction
  • C. size
  • D. speed
Correct Answer: Option D - Inertia of Motion – The tendency of a body to remain in its state of uniform motion in a straight line, is called Inertia of Motion Example (i) An athelete runs for certain distance before taking a jump so that his inertia of motion or speed help him to take a longer jump. (ii) If a horse running fast suddenly stops, the rider is thrown forward if he is not firmly seated.
D. Inertia of Motion – The tendency of a body to remain in its state of uniform motion in a straight line, is called Inertia of Motion Example (i) An athelete runs for certain distance before taking a jump so that his inertia of motion or speed help him to take a longer jump. (ii) If a horse running fast suddenly stops, the rider is thrown forward if he is not firmly seated.

Explanations:

Inertia of Motion – The tendency of a body to remain in its state of uniform motion in a straight line, is called Inertia of Motion Example (i) An athelete runs for certain distance before taking a jump so that his inertia of motion or speed help him to take a longer jump. (ii) If a horse running fast suddenly stops, the rider is thrown forward if he is not firmly seated.