Question

A 2 kg body and a 3 kg body are moving along the
x-axis. At a particular instant the 2 kg body has a
Nelocity of 3 m/s and the 3 kg body has the velocity
of 2 m/s. The velocity of the centre of mass at that
instant is :-
(1) 5 m/s
(2) 1 m/s
12
(3) 0​

Answer 1

Answer:

2.4 m/sec

Explanation:

let m1 be 2kg

and v1 be 3m/sec

let m2 be 3kg and v2 = 2m/sec

thus,

$v = \frac{m1v1 \: + \: m2v2}{m1 + m2} \\ v = \frac{ 2 \times 3 \: + 3 \times 2}{2 + 3} \\ v = \frac{12}{5} = 2.4 \: (approx.)$

please mark my answer as brainliest answer.. hope this helps...... thank you

Answer 2

Answer:

The velocity of centre of mass is 12/5 ms⁻¹

Explanation:

Given;-

    Masses are, = 2kg, 3kg  

Velocities are, = 3 m/s & 2 m/s respectively.

Now, let the velocity of the centre of mass be Vcm.

Then, we know by formula that;-

     Vcm = v₁m₁ + v₂m₂ / m₁ + m₂

     Vcm = 3(2) + 2(3) / 2 + 3

     Vcm = 6 + 6/ 5

     Vcm = 12/5 ms⁻¹

Hence, the velocity of centre of mass is 12/5 ms⁻¹.

Hope it helps! ;-))