3.2
5.3
7.0
8.0
Correct answer is A
Momentum of bodies with common velocity = \(m_{1}v_{1} + m_{2}v_{2} = (m_{1} + m_{2})v\)
\((10 \times 5) + (15 \times 2) = (10 + 15)v\)
\(50 + 30 = 25v \implies v = \frac{80}{25} = 3.2ms^{-1}\)
If \(f(x) = 3x^{3} + 8x^{2} + 6x + k\) and \(f(2) = 1\), find the value of k....
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