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24 April, 09:05

A ball is thrown with a speed of 20 m/s at an angle of 40°. Which of the

following statements describes the motion of the ball at the top of its

trajectory?

A. The horizontal component of velocity is increasing

B. The vertical component of velocity is zero.

c. The vertical acceleration is zero

D. The horizontal component of velocity is zero

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Answers (1)
  1. 24 April, 12:22
    0
    B. The vertical component of velocity is zero.

    Explanation:

    At the top of the flight, the gravitational acceleration g has stoped the vertical upwards motion of the ball momentarily before the vertical velocity starts to increase in the opposite direction.
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