Question

7:32 0 . 18% 5 Col20628 il y Pow To (a) The graph below plots the position versus time for an object moving in one dimension along the x direction. What is the speed (magnitude of velocity) of the object at. The graph plots position vs. time, not velocity vs. time. To find velocity, think about the definition of instantaneous velocity and how it is related to position. Notice the graph is a straight line from .. . Can you relate the average velocity over this interval to the velocity at 2.5 s? m/s What direction is the object moving along that time? What is the acceleration of the object at (Indicate the direction with the sign of your answer.) m/s2 Is the speed increasing, decreasing or constant at that time? (b) The graph below plots the velocity versus time

Answer 1

a> Magnitude of velocity = slope of nust marre - Any - velocity at t= 2.55 - ) = 4 = 4.33 m/s = 1.3 m/s. 6) acceleration in rate of change of we locily At t= 2.5s, the object moves with constant ve locity of 4 Hence acceleration - A = 0 / 32 m/s. e speed in constant at that time