Question

A child runs horizontally 3m/s and hops into a stationary wagon with mass 6kg. the wagon and child then move up an 8 degree frictionless hill before stopping 2m along the slope. find the mass of the child

Answer 1

\[m_cv_c=(m_c+m_w)v'\]

Answer 2

\[m_c=\frac{(m_c+m_w)v'}{v_c}\]