Multiple choice

To cover a distance of 216 km in 3.2 hours, what should be the average speed of the car in metres/second?

  1. 67.5

  2. 33.75

  3. 37.5

  4. 18.75
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D Correct answer
Explanation

Speed = 216 km / 3.2 hr = 67.5 km/hr. Convert to m/s: 67.5 * (5/18) = 18.75 m/s.

AI explanation

Using the formula for speed as distance divided by time, the speed in kilometers per hour is 216 divided by 3.2, which equals 67.5 km/hr. To convert this to meters per second, multiply by 5/18, so 67.5 multiplied by 5/18 equals 18.75 m/s.

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