JEE Main Physics question
A bullet of mass 10 g moving with 300 ms⁻¹ hits a block of ice of mass 5 kg and drops dead. The velocity of the ice is [OJEE 2009]
Answer: (B)
Solution
v = (0.01×300)/5 ≈ 3/5 = 0.6 ms⁻¹ = 60 cm/s (the small bullet mass added to the ice is negligible).