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a 30 kg shell splits into 3 equal parts. after spliting they've follow velocities: 3 i + 2 j ; -2 i ; 5 i +5 j : Q. if whole of energy relesed in exploasion is convert into kinitic energy of 3 parts then how much energy has been relesed? a. 260 J b. 290 J c. 335 J d. 410 J

a 30 kg shell splits into 3 equal parts.
after spliting they've follow velocities:
3 i + 2 j ;
-2 i ;
5 i +5 j :
Q.
if whole of energy relesed in exploasion is convert into kinitic energy of 3 parts then how much energy has been relesed?
a. 260 J
b. 290 J
c. 335 J
d. 410 J

Grade:11

1 Answers

G Narayana Raju
51 Points
10 years ago

the velocities of the particals are root(13);2;root(50)

so use the energy formula as all the energy is conserved for the kinetic energy

E= 1/2(10)(13) + 1/2(10)(4) +1/2(10)(50)

E= 335J

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