(a) Calculate the distance travelled by the bus in the first 40 s. distance (b) The distance travelled between 40 s and 80 s is 315 m. Calculate the average speed of the bus during the whole 80 s. average speed .m/s (c) Describe the motion of the bus (i) between 40 s and 70 s, (ii) between 70 s and 80 s.

figure 1 shows a velocity-versus-time graph for the bicycle trips of two friends with respect to the parking lot where they started. Xena's position at time zero is 0 and Gabriele's position is 60 m. Determine the displacement of Xena in 40 s.   Determine the displacement of Gabriele in 30 s.   What time interval is needed for Xena to catch Gabriele?

(a) Give two differences between average speed and average velocity. (b) For an object that undergoes some motion starting at one point and ending at different point, what does the average value of the speed (or velocity) tell you about the motion of the object on this trip and what does the instantaneous value of speed (or velocity) tell you about the motion of the object on this trip? (c) On a position versus time graph how do you determine the average velocity and the instantaneous velocity? (d) Illustrate your answer to (c) with a position versus time graph. (e) Why is the instantaneous speed always the magnitude of the instantaneous velocity?

(uonusod JOLC The graph shows the position of an object over a time of 75 s. The object initially travels to the left. (m) 20 10 01 40 09 (s) 1 08 Describe the motion of the object during the 75 s. Find the velocity of the object during the last 1 s. What is the displacement of the object after 65 s? 2.3 What is the displacement of the object after 75 s? What is the distance covered by the object in the 75 s? 2.4 2.5 The velocity-time graph below represents the mot N222 2 344