Multiple Choice
The spring constant for the spring in a special cannon is 1800 N/m. In cocking the cannon, the spring is compressed 0.55 m. What is the initial speed of a 7.0-kg cannonball at rest on the free end of the spring when it is released?
A) 77 m/s
B) 140 m/s
C) 12 m/s
D) 8.8 m/s
E) 16 m/s
Correct Answer:

Verified
Correct Answer:
Verified
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