What is the momentum of a 20 kg object moving at 100 m/s

The momentum is 2000 kg-m/s

Explanation:

Mass of object ; m=20kg

velocity of object ; v=100 m/s

The momentum ( Linear momentum ) is given by

Momentum = m v

Insert values

Momentum = 20 kg 100 m/s

Or

Momentum = 2000 kg m/s

The momentum is 2000 kg-m/s

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.