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A cyclist travels at a speed of 15 km/h. If he encounters a headwind of 5 km/h,

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Question: A cyclist travels at a speed of 15 km/h. If he encounters a headwind of 5 km/h, what is his effective speed?

Options:

  1. 10 km/h
  2. 15 km/h
  3. 20 km/h
  4. 25 km/h

Correct Answer: 10 km/h

Solution: 

Effective speed = speed of cyclist - speed of wind = 15 - 5 = 10 km/h.

A cyclist travels at a speed of 15 km/h. If he encounters a headwind of 5 km/h,

Practice Questions

Q1
A cyclist travels at a speed of 15 km/h. If he encounters a headwind of 5 km/h, what is his effective speed?
  1. 10 km/h
  2. 15 km/h
  3. 20 km/h
  4. 25 km/h

Questions & Step-by-Step Solutions

A cyclist travels at a speed of 15 km/h. If he encounters a headwind of 5 km/h, what is his effective speed?
  • Step 1: Identify the speed of the cyclist, which is 15 km/h.
  • Step 2: Identify the speed of the headwind, which is 5 km/h.
  • Step 3: To find the effective speed, subtract the speed of the wind from the speed of the cyclist.
  • Step 4: Perform the subtraction: 15 km/h (cyclist's speed) - 5 km/h (wind speed) = 10 km/h.
  • Step 5: The effective speed of the cyclist is 10 km/h.
  • Relative Speed – Understanding how to calculate effective speed when opposing forces (like wind) are present.
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