Question 74: Centre of Mass and Rotational Motion

Question

A body of mass $1000 \mathrm{~kg}$ is moving horizontally with a velocity $6 \mathrm{~m} / \mathrm{s}$. If $200 \mathrm{~kg}$ extra mass is added, the final velocity (in $\mathrm{m} / \mathrm{s}$) is:

Accepted Answer

Momentum will remain conserve
$\begin{aligned}
& 1000 	imes 6=1200 	imes v \
& v=5 \mathrm{~m} / \mathrm{s}
\end{aligned}$

Answer

6

Answer

2

Answer

3

Answer

5

Centre of Mass and Rotational Motion

A body of mass 1000 \mathrm{~kg} is moving horizontally with a velocity 6 \mathrm{~m} / \mathrm{s}. If 200 \mathrm{~kg} extra mass is added, the final velocity (in \mathrm{m} / \mathrm{s}) is:

Choose the correct answer: