Laws Of Motion Question 5
Question 5 - 2024 (27 Jan Shift 1)
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:
(1) 6
(2) 2
(3) 3
(4) 5
Show Answer
Answer: (4)
Solution:
Momentum will remain conserve
$1000 \times 6=1200 \times v$
$v=5 \mathrm{~m} / \mathrm{s}$
