Is inertia the same as momentum???

Answer 1

Hello =)

Not strictly speaking....

Momentum is the inertia of motion. Inertia is a property of mass, whether that mass is moving or not......

For example...I weigh 400 lbs. If you were to push me, you would have to overcome the inertia of my mass to move me, but once I was moving, you would have to overcome the momentum of my mass, in order to stop me from squishing the person behind me.

It's a silly example, but illustrative, nonetheless.

Namaste, and happy holidays,

--Tom

Answer 2

Momentum And Inertia

Answer 3

glass.... has the best answer. Inertia is simply the resistance to change in position or velocity by a mass (often called an inertial mass). It is the thing that, barring any net forces on it, keeps a mass moving if it is already moving or standing still if it's already standing still.

All inertial mass (M) has inertia. In fact, one of the defining characteristics of mass versus energy is that mass has inertia and energy does not. You may recognize the inertia definition as being similar to Newton's First Law.

Momentum is just a physical phenomenon of an inertial mass (M) that is already in motion. We often write it as P = Mv; where v is the velocity the mass (M) is movingg. As you can see, if it ain't movin' there ain't no mo' momentum.

Turns out, don't you just love that phrase, that, unlike inertia, energy also as momentum. For example, photons have p = hf/c momentum; where h = Plank's constant, f = wave frequency, and c = speed of light in a vacuum.

So there you have it...inertia is an intrinsic characteristic of mass, while momentum is a measure of the same mass in motion.

Answer 4

No.

Inertia is kind of the same thing as mass. It is the ability to resist a change in velocity.

Momentum is velocity times mass. Similar to, but not the same as kinetic energy.

A mass at rest has inertia but no momentum. The momentum of a fixed mass increases linearly as the velocity increases, but it's inertia stays constant.

Answer 5

Nope. Inertia is the resistance a body has to motion and momentum is the product of mass times velocity of a body.....

Answer 6

No momentum is like putting your foot on the peddle in the car and taking it off. You now have momentum carrying you forward. Inertia is mostly used in terms of space movement. Once you get to a set speed and course, inertia will keep you going on that speed and course, barring a gravity pull or running into something. You will not need to keep your foot on the gas or steer unless you want to change something.

Answer 7

Momentum is the amount of mouvement of a moving body, inertia is the characteristic of an imaginary system that wouldn't be subject to any forces (gravity is felt everywhere, so such a system is impossible to obtain). To calculate momentum, inertia is required.

Momentum= (mass) times (speed)

It is exprimed in the unit of mass times the unit of lenght times the unit of time.

Answer 8

No

Inertia is the property of object, which signifies its resistance to changes of its state of motion. It depends on the mass. Higher the mass more inertia. It does not depend on the frame of reference.

Momentum is the product of mass and the velocity. It depend the frame of reference.

To illustrate:

Imagine two persons A and B , A on a train and B on the platform by the side of the railway line. They have two identical steel balls ,a and b respectively, of mass one kilogram each.

The train is moving at a velocity of 3.6 kilometers per hour. Both A and B throw the balls in the same direction such that both balls leave the throwers at speeds of one meter per second.

As both balls left the throwers A and B with the same velocity the resistance throwers felt would have been the same. The inertia of identical balls are the same.

However A sees the ball thrown by himself moving at a velocity of one meter per second. If the Momentum of ball 'a' seen by A is denoted M(a by A)

Then M(a by A) = 1*1 kg.m/s

Since the Train and the ball "b" are traveling in the same direction with the same velocity the ball will appear to be stationary to A hence the Momentum of ball b as seen by A would be zero.

Similarly B would see the ball thrown by him traveling with a velocity of one meter per second while he see the ball thrown by A to be 2 meters per second.

So from his frame of reference the momentum of the ball b thrown by himself would be 1*1 kg,m/s while the
Thus ball 'a' would have a momentum of1kg,m/s from in A's frame and 2kg,m/s in B's frame wher4eas the ball 'b' would have a momentum of zero in A's frame 1kg.m/s in B's frame.

Answer 9

inertia is the tendency of an object to resist change it its motion...momentum is movement all around us
GL
xoxox
♥

Answer 10

inertia= the resistance an object has to a change in the state of motion

momentum= the quantity of motion an object has