13-4,5 Exploding Object Due in 11 hours, 44 minutes A 41.0-kg body is moving in

Question

13-4,5 Exploding Object Due in 11 hours, 44 minutes A 41.0-kg body is moving in the direction of the positive x axis with a speed of 335 m/s when, owing to an internal explosion, it breaks into three pieces. One part, whose mass is 5.0 kg, moves away from the point of explosion with a speed of 403 m/s along the positive y axis. A second fragment, whose mass is 3.0 kg, moves away from the point of explosion with a speed of 342 m/s along the negative x axis. What is the speed of the third fragment? Ignore effects due to gravity. 4.51x102 m/s You are correct. Previous Tries Your receipt no. is 161-4415 How much energy was released in the explosion? 939200 J Submit AnswerIncorrect. Tries 12/15 Previous Tries

Explanation / Answer

b)

Energy released in explosion is given by

E=(1/2)m1V12+(1/2)m2V22+(1/2)m3V32-(1/2)mV2

E=(1/2)[5*4032+3*3422+(41-5-3)*4512-41*3352]

E=1.643*106J or 1.643 MJ

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