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Motion Test - 2

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Motion Test - 2
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  • Question 1
    1 / -0

    For a body performing motion with uniform speed, the distance-time graph is

    Solution

    For a body moving at uniform speed, the distance-time graph is a straight line inclined to the time axis, which may pass through origin or some other point on the Y-axis.

     

  • Question 2
    1 / -0

    If an object is dropped from a height and it hits the ground with a velocity of 50m/s, then its initial velocity is taken as

    Solution

    When an object is dropped from some height, its initial velocity is taken as zero.

     

  • Question 3
    1 / -0

    A sprinter completes a round on a circular path of circumference 400 m, what is his displacement?

    Solution

    As the initial and final points are same, the displacement is zero.

     

  • Question 4
    1 / -0

    On the distance-time graph, the Y-axis should be labeled as

    Solution

    Independent variables are plotted along X-axis and dependent variables are plotted along Y-axis. In the distance-time graph, time is independent and distance is a dependent variable; hence plotted along Y-axis.

     

  • Question 5
    1 / -0

    What is the distance covered by a car in 4 h if it is moving with a speed of 35 km/h?

    Solution

    Distance = Speed × Time

    = 35 km/h × 4 h

    = 140 km

     

  • Question 6
    1 / -0

    Name the instrument used to measure instantaneous speed of a vehicle.

    Solution

    The instrument used to measure instantaneous speed of a vehicle is speedometer.

     

  • Question 7
    1 / -0

    When you travel 40 km towards East and then 10 km towards West, your net displacement is

    Solution

    Total displacement = (40 East − 10 West) km

    = 30 km towards East

     

  • Question 8
    1 / -0

    A reference point which is used for observing the motion is called

    Solution

    A reference point which is used for observing the motion is called origin.

     

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