Teaching NVS PGT 2024 Test Series Physics Center of Mass and Linear Momentum Conservation of Linear Momentum
A cricket ball of mass 150 g has an initial velocity u = \((3\widehat i+4\widehat j)\)m s−1 and a final velocity v = \(-(3\widehat i+4\widehat j)\)m s−1 after being hit. The change in momentum (final momentum-initial momentum) is (in kg m s1)
1
zero
2
\(-(0.45\widehat i+0.6\widehat j)\)
3
\(-(0.9\widehat i+1.2\widehat j)\)
4
\(-5(\widehat i+\widehat j).\)