Multiple choice

A car moving on a straight path covers a distance of 1 km due east in 100 s. What is the speed?

  1. $1  \ m s^{-1}$
  2. $10  \ m s^{-1}$
  3. $100 \  m s^{-1}$
  4. $1000 \  m s^{-1}$
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B Correct answer
Explanation

Speed = distance / time. Distance = 1 km = 1000 m. Time = 100 s. Speed = 1000 / 100 = 10 m/s.

AI explanation

First convert the distance from kilometers to meters, making 1 km equal to 1000 m. Using the formula Speed equals Distance divided by Time, divide 1000 m by the given time of 100 s. This calculation results in 10 m/s. The speed of the car is 10 m/s.

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