dorke's Conservation of Energy Part 2 Practice S s 1 ) A spring with a spring constant of 30 N/m is compressed 0.15 m. How much energy is stored in the spring? ing 2 ) A 0.1 kg mass is placed onto a vertical spring and the spring stretches 0.06 meters. What is the spring constant of the spring? 3 ) A spring with a spring constant of 20 N/m is compressed 0.5 m. A 3 kg block is placed at rest against the compressed spring. What is the max velocity of the block? 4) Using the spring and block from the previous question, find the velocity of the block when the spring is still compressed 0.2 m. v = 5 m's 5) A 4.0 kg block is initially sliding at 5 m/s at 4 kg the top of a frictionless slope. The height of the slope is 1.5 m. What is the velocity of the block at the bottom of the slope? frictionless h = 1.5 m 5) A spring loaded nerf gun has as spring constant of 150 N/m. In order to fire the spring is first compressed 15 cm. If the dart has a mass of 1.3 grams. What is the velocity of the dart as it leaves the barrel