On object has 25 Joules of Kinetic Energy. If the velocity of the object is doubled, what would be the result of the Kinetic Energy?

The kinetic energy would quadruple. See the explanation below, please.

Explanation:

We use the formula of kinetic energy formula is:

Ec = 1/2 m x v ^ 2. . Take as an example a speed of 1m / s, and calculate the body mass:

25 J = 1/2 m x (1m / s) ^ 2 -> m = 25kgxm2 / s2x2 / 1 m2 / s2 = 50 kg

1J = 1 kgxm2 / s2

For a doubled speed: 2m / 2

Ec = 1/2 x 50kg x (2 m / s) 2 = 100J

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.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2