কাজ

Mass of BB is four times that of A.BA . B moves with a velocity half that of AA. Then, BB has ;

হানি নাটস

According to the question given,

MB=4×MAM_B = 4 \times M_A and VB=VA2 V_B = \dfrac{V_A}{2}

K.EA=12MAVA2K.E_A = \dfrac{1}{2}M_AV_A^2 .........(1)

K.EB=12MBVB2K.E_B = \dfrac{1}{2}M_BV_B^2 = 12 (4×MA)(VA2)2=12MAVA2\dfrac{1}{2}\ (4 \times M_A) \left(\dfrac{V_A}{2}\right)^2=\dfrac{1}{2}M_AV_A^2 ........(2)

From above equation

K.EA=K.EBK.E_A=K.E_B

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