An object moving whit a speed of 35 m/s and has kinetic energy of 1500 j, what is the mass of the object

The mass of the object is 2.44kg

The calculation can be done as follows;

velocity= 35 m/s

mass= ?

kinetic energy= 1500 joules

k.e= 1/2mv²

1500= 1/2m(35²)

1500= 0.5(1.225)(m)

1500= 6.125m

m= 1500/612.5

= 2.44

Hence the mass of the object is 2.44 kg

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Mass of the object is 2.45 kg

Explanation:

It is given that,

Speed of an object, v = 35 m/s

Kinetic energy, K = 1500 J

We need to find the mass of the object. The kinetic energy of the object is given by :

m = 2.45 Kg

So, the mass of the object is 2.45 kg. Hence, this is the required solution.

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.