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20 January, 19:10

53. • A convertible travels down a straight, level road at a

slow speed of 13 km/h. A person in the car throws a ball

with a speed of 3.6 m/s forward at an angle of 30° to the

horizontal. Where is the car when the ball lands?

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Answers (1)
  1. 20 January, 21:26
    0
    The convertible will be ahead at a distance from its initial position, d = 1.336 m

    Explanation:

    Given,

    The speed of the convertible, v = 13 Km/h

    = 3.61 m/s

    A ball thrown with a speed, u = 3.6 m/s

    The angle of the velocity of a ball formed with the horizontal, Φ = 30°

    The time of flight of the projectile is given by the formula,

    T = 2u sin Ф / g

    = 2 x 3.6 x 0.5 / 9.8

    = 0.37 s

    The displacement of the car,

    d = v x t

    = 3.6 x 0.37

    = 1.336 m

    Hence, the convertible will be ahead at a distance from its initial position, d = 1.336 m
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