A slingshot launches a 0.0570 kg tennis ball directly upward. If the length of the slingshot is 39.0 cm and the final speed of the ball is 15.0 m/s, what is the average force of the slingshot on the ball?
A) 17.0 N
B) 0.559 N
C) 0.723 N
D) 6.92 N
E) 16.4 N



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