Question

According to the work-energy theorem, the amount of work done can be determined using which formula?

Answer 1

W = KE = 1/2m(v2f-v2i) also known as D just took the test

Answer 2

Answer:

$W=K_f -K_i = \frac{1}{2}mv_f^2 -\frac{1}{2}mv_i^2$

Explanation:

The work-energy theorem states that the amount of work done is equal to the variation of kinetic energy of the object, therefore:

$W=K_f -K_i = \frac{1}{2}mv_f^2 -\frac{1}{2}mv_i^2$

Where:

m is the mass of the object

$v_i$ is the initial velocity of the object

$v_f$ is the final velocity of the object