Mastering Physics: Assignme Mastering Physics: Ch 11 x k- O Session ring physics

Question

Mastering Physics: Assignme Mastering Physics: Ch 11 x k- O Session ring physics.com assignment Problem 51476225&offset-next; /myct/itemView? A COLLEGE PHYS-203 fa2015 Signed in as Chris Lowther Help l Close Ch 11 HW (Part Problem 11.22 Resources V previous l 13 of 24 next Agent Arlene devised the following method of measuring the muzzle velocity of a rifle (the figure Part A below). She fires a bullet into a 4.153-kg wooden block resting on a smooth surface, and attached to a spring What is the speed of the bullet? Express your answer to four significant figures and include the appropriate units. of spring constant k 63.0 N/m. The bullet, whose mass is 7.870 g, remains embedded in the wooden block. She measures the maximum distance that the block Compresses the spring to be 9.460 cm. Figure 1 Value Units My Answers Give Up Submit Provide Feedback Continue 9.460 cm M m Chegg St... A 3:00 PM E 2/11/2015 Ask me anything Mast

Explanation / Answer

SINCE there is no external force so momentum will be conserved

initial = final

let V be initial velocity of bullet and V1 be the final velocity of bullet anf wodden block after collision

(7.870) * V = (4153+7.870) * V1

using energy conservation after collision

0.5 *((4153+7.870))/1000 * (V1 )^2 = 0.5 * 163 * (9.460/100)^2

V1 = 0.59209700599 m/s

(7.870) * V = (4153+7.870) * 0.59209700599

V= 313.041762302 m/s

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---