A 5.0 kg wooden block is in free fall at 10 m/s. What is the Kinetic Energy for the wooden block?

250 J

Explanation:

Apply the formula:

K = 1/2.m.v²

K = 1/2.5.10²

K = 1/2.5.100

K = 5.50

K = 250 Joules

But, remember that if the speed is accelerating or not, if it is, then we need to know the point in time that the question is asking for the Kinetic Energy.

In this case, I think it is just a constant speed.

gets less

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.