Answer:
v = 5 m/s
Explanation:
As we know that mass of the trolley which is moving is given as
m = 1000 kg
its speed is given by
\(v_i = 10 m/s\)
now we know that when external force on a system is zero then its total moment will remains conserved
so here when two trolleys will collide then there is no external force on it
so here momentum of two trolleys will remain conserved
so we can say
\(m_1v_1 = (m_1 + m_2) v\)
here we will have
\(v = \frac{m_1}{m_1 + m_2} v_1\)
\(v = \frac{1000}{1000 + 1000} 10\)
\(v = 5 m/s\)
