A ball of mass $2.0\,\text{kg}$ is moving with a speed of $12\,\text{m s}^{-1}$. It travels towards an object of mass $3.0\,\text{kg}$ that is initially at rest. The ball collides with the object and remains stuck to it. Which row shows the total momentum, and the speed of both objects immediately after the collision?
- Atotal momentum $= 0\,\text{kg m s}^{-1}$, speed $= 4.8\,\text{m s}^{-1}$
- Btotal momentum $= 0\,\text{kg m s}^{-1}$, speed $= 8.0\,\text{m s}^{-1}$
- Ctotal momentum $= 24\,\text{kg m s}^{-1}$, speed $= 4.8\,\text{m s}^{-1}$
- Dtotal momentum $= 24\,\text{kg m s}^{-1}$, speed $= 8.0\,\text{m s}^{-1}$