Question: 1. An object is launched from an elevated surface at 6 7 m/s at an angle of 5 8 . 5 . If the

1. An object is launched from an elevated surface at $67$ m/s at an angle of $58.5 ° .$ If the object reaches a maximum height of $752$ m before hitting the ground, how long was it in the air?

2. A ball is rolled from a flat surface and is in the air for $9.66$ s before hitting the ground $521$ m away. What was the initial velocity of the object?

3. An object that is launched from a flat surface is in the air for $5.23$ s before landing $68.6$ m away. If its initial velocity is $28.8 \frac{}{} m/s,$ what was the object's launch angle?

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