Question 1 Physics students are studying momentum. Using a 10-kg box, they record the applied force at several equally spaced positions as the box is pushed from rest across a horizontal surface. The students create the graph shown below with force on the y-axis in newtons (N) and position on the x-axis in meters (m). Friction between the box and the surface is negligible.

\f2 kg 8.0 m 20'O F O O VI F OU(J) OHNWAUO X 1 2 4 5 6 7 8k = 25 N/m 3.0 kg *= -0.5m x= 0.0m x = 0.5 mWo O 0 Wo O 02 4 16gues 2=5 mass of block in = 2kg L : 8 m 0 = 20' 8 m AP. E : most Ah : 8 x kin 20 Oh = 2. 736 m / -> Then the change in potential energy will be A P . E = 2 X 9 . 8 1 X 2 . 7 3 6 - 53 . 68 J change in P.E. => AP. E = 53. 68 1 " Pie. = Potential Energy. The kinetic energy of on object in givenby s K.E. = 2mv2 Concept as The direction of motion of an object remains constant if the wet force acting on it is zero-The kinetic energy of an object decrease if the magnitude of its ulocity decreases . Is the correct diagram is the ove where the force F. is applied in the opposite direction to the box's motion