Question

How much momentum does a 1Kg object moving at $10m{{s}^{-1}}$ have?

Answer 1

Hint: Momentum is often defined as "mass in motion." All objects have mass so, if an object is moving, then it's momentum - it's its mass in motion. The quantity of momentum that an object has depends upon two variables: what proportion stuff is moving and the way fast the things are moving.

Complete answer:
Momentum of any body can be given by the product of mass with velocity. It is a vector quantity and is fully dependent on the mass and the velocity of the object. If an object is at rest then it will have zero momentum, no matter how much mass it has.
Therefore, an object of mass 1Kg will have a momentum of
$Momentum(p)=mv$
$p=(1000)(10)$
$p=10000\text{ g m}{{\text{s}}^{-1}}$
Or $p=10\text{ Kg m}{{\text{s}}^{-1}}$
Hence, we can say that an object having mass 1Kg and is moving with $10m{{s}^{-1}}$ will have a momentum of $10\text{ Kg m}{{\text{s}}^{-1}}$

Additional Information:
Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is adequate to the mass of the thing times the speed of the thing. The momentum of any object that's at rest is 0. Objects at rest don't have momentum - they are doing not have any "mass in motion."

Note:
Momentum is a vector quantity. As discussed in an earlier unit, a vector quantity is a quantity that's fully described by both magnitude and direction. The direction of the momentum vector is the same because the direction of the speed. From the definition of momentum, it becomes obvious that an object features a large momentum if both its mass and its velocity are large.