Question

solve it on the paper and spammed answer will be reported by me​

Answer 1

Answer:

120m/sec

Explanation:

We use the principle of conservation of momentum here.

$mv= m \: 1 \: v1+ m₂v₂$

$m = 30 \\ v = 48 \\ m1 = 18 \\ v1 = 0 \\ m2 = 30 - 18 = 12 \\ v2 = ?$

$30 \times 48 = 18 \times 0 + 12 \times v2 \\ 30 \times 48 = 12 \times v2 \\ v2 = \frac{30 \times 48}{12} = 120$