Question

An object falls freely near Earth's surface. Which graph best represents the relationship between the object's kinetic energy and time elapsed during its fall?

Answer 1

B? because as it falls the kinetic energy decreases?

Answer 2

Actually...as it falls the K increases. Note k=mv^2 / 2. Mass is constant, but v increases because there is a free fall acceleration. You would have a graph that is increasing with a instantaneous positive change (d/t acceleration)

Answer 3

oh okay so the answer is a

Answer 4

No, note I said that the instantaneous change is positive.