A shell at rest at the origin explodes into three fragments of masses 1 kg, 2 kg and m kg. The 1 kg and 2 kg pieces fly off with speeds of 5 ms –1 along x-axis and 6ms –1 along y-axis respectively. If the m kg piece flies off with a speed of 6.5 ms –1 , the total mass of the shell must be:
Text Solution
Verified by ExpertsThe correct answer is:
B
P 3 = 
m 3 v 3 = 
or m 3 v 3 = 13
or m 3 = 
Total mass = 1 + 2 + 2 = 5 kg
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