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8 January, 08:12

4) A motorcycle travels at a constant 90 km per hour in the positive direction down a straight line highway.

What is the displacement, in standard units, of the car 75 seconds later?

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  1. 8 January, 08:34
    0
    1875 meters

    Explanation:

    We are given;

    Velocity of the motorcycle as 90 km/hr Time as 75 seconds

    We are required to calculate the displacement;

    First we will convert speed to m/s The suitable conversion factor will be;

    1 m/s = 3.6 km/hr

    Therefore, 90 km/hr

    = 90 km/hr : 3.6 km/hr per m/s

    = 25 m/s

    But;

    Displacement = Velocity * time

    Thus;

    Displacement = 25 m/s * 75 seconds

    = 1875 meters
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