A position-time graph for a particle moving along the x axis is shown in Figure P2.7. The divisions along the horizontal axis represent 1.25 s and the divisions along the vertical axis represent 1.0 m. The minimum for the curve is at the 8th box on the time axis. The orange curve intersects the grid at (x = 2box, y= 11box); (3box, 8 box); (4box, 6box); (5box, 4box); (6box, 3box); (7box, 1.3box); (8box; 2box); The green line has coordinates on the grid of (x = 0box, y= 13box) and (x = 7box, y= 0box) x (m) Figure P2.7 (a.).Find the average velocity in the time interval t = 3.75 s to t = 10.00 s. -26 x Enter a number. differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. m/s (b) Determine the instantaneous velocity at t = 5.00 s (where the tangent line touches the curve) by measuring the slope of the tangent line shown in the graph. -3.5 X Your response differs from the correct answer by more than 100%. m/s (c) At what value of t is the velocity zero? 7 X Your response differs from the correct answer by more than 10%. Double check your calculations. sPOSITION VS TIME 140 100 POSITION (M/S) 20 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 time (s) Object A Object B Object C - Object D - Object E - - Object F An object moves with constant acceleration as shown on the graph above. (a) at t=4 secs, how does the average velocity compare to the instantaneous velocity? O The instantaneous velocity is lower, since the object is slowing down O The instantaneous velocity is lower, because the graph is curved. O The instantaneous velocity is higher, since the object is speeding up O They are the same, since average velocity describes the motion at all times. O The instantaneous velocity is higher, since the line is moving up on the graph. O They are the same, since the average describes the overall velocity