Problem A car is located at 30 m at point A, 50 m at point B, 40 m at point C, 0 m at point D, -40 m at point E and –50 m at point F. Equal time intervals separate each point. Sketch the position versus time graph. Find the displacement, average velocity and average speed of the car between A and F.
Problem 2 A particle moves along the x-axis. Its position varies with time according to the expression x = -4t + 2t 2 where x is in meters and t is in seconds. A)Determine the displacement of the particle in the time intervals t = 0 to t = 1 sec and t = 1 sec to t = 3 sec. B) Calculate the average velocity during these two time intervals. C) Find the instantaneous velocity at time t = 2.5 sec.
Problem 3 The position of an object is given by the equation x(t) = 2 + 4t – t 2, where position is measured in meters and time in seconds. What is the particle’s average acceleration from t = 0 to t = 2?