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Q. A meteor whose mass was about 1.9*10^8 kg struck earth (mE=6.0*10^54 kg) with a speed of about 19 km/s and came to rest in the earth what is the earth's recoil speed and what fraction of the meteor's kinetic energy was transformed to kinetic energy of the earth?

Q. An archer puts a 0.34 kg arrow to the bowstring. An average force of 209 N is exerted to draw the string back 1.3 m. Unless otherwise directed, assume that air resistance is negligible. Draw energy bar graphs to solve the problem.

(a) Assuming that all the energy goes into the arrow, with what speed does the arrow leave the bow?

(b) If the arrow is shot straight up, how high does it rise?

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