Question: A 500 N body initially at rest is acted upon for 9 seconds by a variable force F =100 (sq rt of t), and also

A 500 N body initially at rest is acted upon for 9 seconds by a variable force F =100 (sq rt of t), and also by a variable resisting force F=30 - t during that time. What is its velocity at the end of 9 seconds?

a. 22.68 m/s

b. 24.82 m/s

c. 30.78 m/s

d. 36.76 m/s

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