Speed, Time and Distance


  1. A train is running with the speed of 45 km/hour. What is its speed in meter per second ?
    1. 12.5
    2. 13.5
    3. 20.5
    4. None of these

  1. View Hint View Answer Discuss in Forum

    Speed of a train in kilometer per hour = 45
    Speed in meter per second = ( 5/18 ) x Speed in kilometer per hour

    Correct Option: A

    speed of a train in kilometer per hour =45

    Speed in meter per second = ( 5/18 ) x Speed in kilometer per hour
    = 45 x 5/18
    = 12.5 kmph


  1. If a motor car covers a distance of 250 m in 25 second, What is its speed in kilometer per hour ?
    1. 36.5
    2. 36.8
    3. 37
    4. 36

  1. View Hint View Answer Discuss in Forum

    Speed of the motor car in meter per second = 250 / 25
    = 10 m/s

    Speed in km/hr = (18/5) x speed in m/s

    Correct Option: D

    Speed of the motor car in meter per second = 250 / 25
    = 10 m/s

    Speed in km/hr = (18/5) x speed in m/s
    = 10 x (18 / 5) km/hour
    =36 km/hour.



  1. A man takes 4 h 20 min in walking to a certain place and riding back. If he walk on both sides he losses 1 h. The time he would take by riding both ways is ?
    1. 2 h 20 min
    2. 3 h 20 min
    3. 2 h
    4. 4 h 40 min

  1. View Hint View Answer Discuss in Forum

    W + R = 4 h 20 min
    W + W = 5 h 20 min

    Correct Option: B

    W + R = 4 h 20 min
    W + W = 5 h 20 min
    ∴ R + R = 3 h 20 min


  1. A boat moves downstream at 1 km in 5 minutes and upstream at 1 km in 12 minutes.What is the speed of current?
    1. 4.5 km/h
    2. 3.5 km/h
    3. 2 km/h
    4. 2.5 km/h

  1. View Hint View Answer Discuss in Forum

    Sd = 12 km/h
    Su = 5 km/h
    Speed of current = (Sd - Su)/2

    Correct Option: B

    Sd = 12 km/h
    Su = 5 km/h
    Speed of current = (12 - 5)/2 = 3.5 km/h



  1. A person goes to his office from his home at the speed of 4 km/h and return back at the speed of 6 km/h. Find the average speed of the person ?
    1. 4.5 km/h
    2. 5 km/h
    3. 10 km/h
    4. 4.8 km/h

  1. View Hint View Answer Discuss in Forum

    Average speed = 2ab/(a+b)
    = (2 x 4 x 6)/(4 + 6)

    Correct Option: D

    Average speed = 2ab/(a+b)
    = (2 x 4 x 6)/(4 + 6)
    = 48/10
    = 4.8 km/h