Abox of mass 26 kg is initially at rest on a flat floor. the coefficient of kinetic friction between the box and the floor is 0.60. a woman pushes horizontally against the box with a force of 505 n until the box attains a speed of 2 m/s. what is the change in kinetic energy of the box?

Explanation:

The change in kinetic energy will be simply the difference between the final and initial kinetic energies:

We know that the formula for the kinetic energy for an object is:

where m is the mass of the object and v its velocity.

For our case then we have:

Which for our values is:

explanation:

newton's third law, for every action there is an equal and opposite reaction.

this means that the temperature of both substances will be equal