Too much skepticism can
2 answers:
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Answer:
Explanation:
Since the surface is frictionless, momentum will be conserved. If the bullet of mass has an initial velocity
and a final velocity
and the block of mass
has an initial velocity
and a final velocity
then the initial and final momentum of the system will be:
Since momentum is conserved, , which means:
We know that the block is brought to rest by the collision, which means and leaves us with:
which is the same as:
Considering the direction the bullet moves initially as the positive one, and writing in S.I., this gives us:
So kinetic energy of the bullet as it emerges from the block will be:
Complete Question
The diagram for this question is showed on the first uploaded image (reference homework solutions )
Answer:
The velocity at the bottom is
Explanation:
From the question we are told that
The total distance traveled is
The mass of the block is
The height of the block from the ground is h = 0.60 m
According the law of energy
Where PE is the potential energy which is mathematically represented as
substituting values
So
KE is the kinetic energy at the bottom which is mathematically represented as
So
substituting values
=>
=>
=>
