Please help and explain it with detail the course is physics

Look at Figure 3-20a. a. What kind of motion does this graph rep- resent? constant motion . b. What does the slope of the line represent? If represent the velocity Position (m) 3- 20a a Time (s) 4.Look at Figure 3-23a. a. What kind of motion does this graph rep- resent ? Stop moving b. What does the area under the curve of the graph represent? displacement Fig 3-23q Velocity a Time 6. Ann is driving down a street at 55 km/h. Sud- denly a child runs into the street. If it takes Ann 0.75 s to react and apply the brakes, how many metres will she have moved before she begins to slow down? By Describe each of the situations below as either uniform motion or non-uniform motion. (a) a car on the highway travels with its cruise control set at 90 km/h (b) a skydiver jumps from a plane and falls faster and faster through the air (c) a piece of paper that is dropped, flutters to the ground (d) a satellite travels in a circular orbit above the earth at a constant speed (e) you sit quietly, enjoying an autumn day. A cyclist is travelling with an average velocity of 5.9 m/s[W]. What will be his displacement after 1.2 h? A canoeist paddles 1.6 km downstream and then turns around and paddles back upstream for 1.2 km. The entire trip takes 45 minutes. (a) What is the displacement of the canoeist? (b) Calculate the average velocity of the canoeist.If the average velocity of a particle is zero in some time interval, what can you say about its displacement for that interval? Is deplacement will as shown in the Figure 3-21 is a position-time graph of two people running. a. Describe the position of runner A relative to runner B at the y-intercepts. b. Which runner is faster? c. What occurs at point P and beyond? Position (m) Runner Ap Runner B Time (s) A physics book is moved once around the perimeter of a table of dimensions 1.0 m by 2.0 m. a. If the book ends up at its initial position, what is its displacement? b. What is the distance travelled? Use the position-time graph in Figure 3-24 to find how far the object travels a. between t = 0 s and t = 40's. b. between t = 40 s and t = 70 s. c. between t = 90 s and t = 100 s. do what is the average velocity between To and 90 seconds? e. whatis the instantaneous velocity at 15 seconds? 500 400 Position (m, W) 300 20 100 0 10 30 50 70 90 Time (s) Fig 3-24 J A girl is taking her dog for a walk. They walk 5.0 km [N] and then turn around and walk 12 km[S]. (a) What is the total distance that they travelled? b) What is their displacement? c) What displacement would they have to walk to get back to their starting point