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That previous shot was a bust and the player tries for a second shot. This time they throw the ball at 8m/s with a 45 degree angle. The height of the throw is 2.4 m above the floor and the hoop is 3.1 m tall. How long will the ball be in the air before reaching the height of the hoop? (hint:we've done this in examples and there are two ways of doing it) 8.11 sec 0.63 sec 0.12 sec 1.01 sec 1.35 sec 5.31 sec

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Giải pháp

4 (106 Votes)
Billy Powell Professional · Tutor for 6 years

Answer

1.01 sec

Explanation

1. Break velocity into components 2. Use vertical motion equation Formula: ** ** We set , , , : 3. Rearrange equation 4. Solve quadratic 5. Select positive times Only upward time to hoop is relevant for first hit → }