Question

Two bodies each of mass 0.5kg are moving in a straight line but opposite in direction with same velocity of 2m/s. They collide with each other and stick to each other after collision what is the common velocity of these bodies after collision

Answer 1

Answer:

m1 = m2 = 0.5 kg

v1 = 2 m/sec

v2 = - 2  m/sec

m1 v1 + m2 v2 = (m1 + m2) v

0.5 * 2 - 0.5 * 2 = 0                  =>   v = 0

So the combined momentum is zero.  so  v = 0.

Answer 2

Answer:

0

Explanation:

The amount of motion a body has is defined as its momentum, which is also equal to the sum of its mass and velocity.

Since it is a vector quantity, its magnitude and direction are both present. The object's velocity is determined by its direction of momentum.

According to the principle of momentum conservation, a system that is isolated maintains its same overall momentum. In a solitary group of objects, momentum, or motion, remains constant. Momentum is the product of an item's mass and its speed, and it is also equivalent to the entire amount of force needed to bring an object to rest.

$m_1$ =0.5kg

$m_2$ =0.5kg

v=2m/sec

$m_1v_1+m_2v_2\\=(m_1+m_2)v$

=0.5×2-0.5×2

=0

Therefore, the total momentum is zero.

What is the S.I unit of momentum?

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Write the unit and dimension of momentum

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