An asteroid strikes the earth and quickly digs a crater into the rocky material

Question

An asteroid strikes the earth and quickly digs a crater into the rocky material below ground level by launching rocks outward and upward. The following table gives you launch speeds and angles for such rocks. Suppose you are 20km away when the asteroid strikes the ground at t=0 and position x=0. Identify the angle of launch for the rocks that will land on your position. Launch Vi (m/s) A 520 @14 degrees B 575 @15 degrees C 630 @16 degrees D 690 @17 degrees E 750 @18 degrees F 810 @19 degrees G 870 @20 degrees H 935 @21 degrees I 1000 @22 degrees

Explanation / Answer

I 1000 @22 degrees

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