I need help!!

6. A ball is loading in a spring cannon. The spring has a spring constant of 100 N/m and the ball has a mass of 0.15 kg. If the spring in compressed 0.10 m, how high will it shoot the ball? "max 7. A block is compressed into spring "A" as shown. Then released and travels to the right, where it compresses spring "B" until it stops. Spring "A" has a spring constant of 100 N/m and spring "B" has a spring constant of 85 N/m. If spring "A" was compressed 0.20 m, how compressed will spring "B" get? A B m 8. Little Billy sits up against a compressed spring as shown below. If the spring is released, how fast will he be going at the bottom of the hill? The spring is compressed 0.4 m. k = 80,000 N/m - m = 100 kg 10 m 9. A box is set against a compressed spring. The spring is released and it shoots the box up the ramp. How high vertically will the box get when it stops on the ramp? The spring constant is 300 N/m. The box has a mass of 5 kg. The spring is compressed 0.3m. spring box