2. A ball is kicked from the ground with an initial speed of 50.0 m/s at an angle of θ₀ = 37° above the horizontal. It lands on a roof (Point A) exactly 6.0 seconds after being kicked. Determine the speed of the ball just before it hits the roof. (Given: sin θ₀~0.6, cos θ₀~0.8, gravitational acceleration g = 10.0 m/s²)
(A) 0.00 m/s
(B) 36.1 m/s
(C) 50.0 m/s
(D) 72.2 m/s
(E) 100 m/s
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統計: 尚無統計資料
統計: 尚無統計資料