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A basketball player makes a shut from the free-throw line at a horizontal distance of 4.3 m away from the hoop. The hoop is suspended 3.1 m above the ground, and the bull leaves the player's hands 2.2 m above the ground. With a good stopwatch, you determine that it takes the ball 0.55 s to reach the top of its trajectory, and another 0.36 s lo go through the hoop. You have no information about the angle or velocity of the ball, but you decide to make some calculations. Ignore air drag, and assume constant gravitational acceleration equal to 9.8 m / s2. Which choice best represents the speed of the ball when it is at the top of ils trajectory?

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