सवगे किसे कहते हैं ? इसका । मात्रक लिखें । संवेग कैसी राशि है ? संवेग के पदों में न्यूटन के
-द्वितीय गति के नियम को लिखें?
(What is Momentum ? Write its Sl unit. What type of quantity is momentum ? Write
Newton's Second Low of Motion is steps of momentum.
Answers
Answer:
the quantity of motion of a moving body, measured as a product of its mass and velocity.
SI unit is kg*m/s
Quantity of momentum is vector
Let us consider an object of mass m, moving along a straight line with an initial velocity u. Let us say, after a certain time t, with a constant acceleration, the final velocity becomes v.Here we see that, the initial momentum
p1=m*u
The final momentum
p2=m*v
The change in momentum can be written as
p2-p1= (m*v)-(m*u)
= m*(v-u)
As we know, the rate of change of momentum with respect to time is proportional to the applied force. The applied force
f is directly proportional to m*(v-u)/t
or
f is directly proportional to m*a
as acceleration (a) = rate of change of velocity with respect to time.
f=k*m*a
Above is the second law of motion formula.
Notations Used In The Formula
F is the force
k is the constant of proportionality
a is the acceleration
The SI units of mass and acceleration are kg and m.s-2 respectively.
Explanation:
The unit of momentum is the product of the units of mass and velocity. In SI units, if the mass is in kilograms and the velocity is in meters per second then the momentum is in kilogram meters per second (kg⋅m/s).
For a particle with mass, the momentum equals mass times velocity, and velocity is a vector quantity while mass is a scalar quantity. A scalar multiplied by a vector is a vector.
The second law of motion gives us a method to measure the force acting on an object as a product of the mass of the object and the acceleration of the object which is the change in velocity with respect to time.