A dart gun contains a spring of spring constant k = 17 N/m which is used to fire a dart of mass m. The dart leaves the gun at a speed of v = 3.5 m/s after the spring is compressed 1 cm. What is the dart’s speed when it hits the floor vf, in m/s, if it is fired horizontally at a height of h = 2 meters?

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Asked Oct 25, 2019
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 A dart gun contains a spring of spring constant k = 17 N/m which is used to fire a dart of mass m. The dart leaves the gun at a speed of v = 3.5 m/s after the spring is compressed 1 cm. What is the dart’s speed when it hits the floor vf, in m/s, if it is fired horizontally at a height of h = 2 meters? 

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From the conservati...

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=mgh - mv 2 - ту 2

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