Multiple Choice
A 100-kg cannon at rest contains a 10-kg cannon ball. When fired, the cannon ball leaves the cannon with a speed of 90 m/s. What is the recoil speed of the cannon?
A) 4.5 m/s
B) 9 m/s
C) 45 m/s
D) 90 m/s
E) zero m/s
Correct Answer:
Verified
Correct Answer:
Verified
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