The string length is 70 cm. The mass of the steel ball is 0.50 kg, while the steel block is 2.50 kg. The block is initially at rest.
Considering elastic collision, what will be the final speed of both objects?
A. $\vec{v}_{ball} = (-23.93 \text{ m/s}) \hat{i}$, $\vec{v}_{block} = (11.47 \text{ m/s}) \hat{i}$
B. $\vec{v}_{ball} = (-24.93 \text{ m/s}) \hat{i}$, $\vec{v}_{block} = (12.47 \text{ m/s}) \hat{i}$
C. $\vec{v}_{ball} = (-3.47 \text{ m/s}) \hat{i}$, $\vec{v}_{block} = (2.23 \text{ m/s}) \hat{i}$
D. $\vec{v}_{ball} = (-2.47 \text{ m/s}) \hat{i}$, $\vec{v}_{block} = (1.23 \text{ m/s}) \hat{i}$
