2. Questions Bank
  3. 7th Class
  4. Science
  5. Time and Motion

7th Class Science Time and Motion Question Bank Motion and Time

  • question_answer
    Swapna travelled by plane flying at an average speed of \[600\,km\,{{h}^{-1}}.\]The plane left the airport at 13:00 h and reached the destination at 15:45 h. How far did Swapna travel?

    A)  1350 km                             

    B)  1200 km             

    C)         1650 km             

    D)         1800 km

    Correct Answer: C

    Solution :

    Distance covered by plane = speed \[\times \]time Average speed \[=600\,km\,{{h}^{-1}}\] Time taken \[=15:45-13:00\] = 2:45 h or 2 h 45 min \[=2\frac{3}{4}h.\] \[\,\text{Distance}=600\times 2\frac{3}{4}=1650\,km\]


You need to login to perform this action.
You will be redirected in 3 sec spinner