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Byju's Answer
Standard IX
Physics
Uniform Circular Motion
Why does the ...
Question
Why does the mass of a body change when it is in motion?
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Q.
I understood that momentum is defined as product of mass and velocity
But what is the meaning of 'change in momentum'?
Like it made no sense to me.. How can momentum change once the body is in motion?
Does the mass and velocity change or does there occur a simple change in motion?
If it is change in motion then why not term it change in motion instead of change in momentum?
Please explain this concept of 'change in momentum' to me im detail.
Q.
If a body does not change its direction during the course of its motion, then
Q.
During rectilinear motion, the body does not undergo a change in the direction of motion.
Q.
Why does our body change when we reach our teens ?
Q.
Assertion :When a body is moving uniformly in a circle, its momentum goes on changing continuously but its kinetic energy remains constant. Reason: Momentum
p
=
m
v
but K.E.=
0.5
m
v
2
. In uniform circular motion
v
changes but
v
2
does not change.
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