Old naval ships fired 15 kg cannonballs from a 200 kg cannon. It was very important to stop the recoil of the cannon since otherwise, the heavy cannon would go careening across the deck of the ship. In one design, a large ship with spring constant 2.5 x 10 4 N/m was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to the ship's frame. What was the speed of the cannon ball if the spring compressed 54 cm when the cannon was fired?

Levine inc., which produces a single product, has prepared the following standard cost sheet for one unit of the product. direct materials (9 pounds at $1.80 per pound) $16.20 direct labor (6 hours at $14.00 per hour) $84.00 during the month of april, the company manufactures 270 units and incurs the following actual costs. direct materials purchased and used (2,500 pounds) $5,000 direct labor (1,660 hours) $22,908 compute the total, price, and quantity variances for materials and labor.