A 2.0 kg lunchbox is sent sliding over a frictionless surface, in the positive direction of an x axis along the surface. Beginning at time t = 0, a steady wind pushes on the lunchbox in the negative direction of the x axis. Figure shows the position x of the lunchbox as a function of time t as the wind pushes on the lunchbox. From the graph, estimate the kinetic energy of the lunchbox at

(a) t = 1.0 s and

(b) t = 5.0 s.

(c) How much work does the force from the wind do on the lunchbox from t = 1.0 s to t = 5.0s?

Transcribed Image Text:

3 4 5 6 7 t (s) 2 8. (u) x