Physics

Problem

Cart A (

m_A = 1.2\,\text{kg}

) moves to the right at

3.0\,\text{m}\,\text{s}^{-1}

and collides with Cart B (

m_B = 0.80\,\text{kg}

) that is moving in the same direction at

1.5\,\text{m}\,\text{s}^{-1}

. The carts latch together on impact. Calculate their common speed immediately after the collision, including the direction.