please. help mw with his physics 20 (grade11) quiz

I HAVE A TIME LIMIT

|I|IIC ICIl I-UI'UI quesm" 13 The following question will require you to graph your answer BY HAND, then upload the graph for evaluation. NOt Vat d If you do not have graph paper, please ask your HUB teacher. You may also print paper by clicking this link. answere Marked out of 6-00 An athlete is running in a crosscountry event. Starting from rest, the athlete accelerates at 0.50 m/s2. After \\V' Flag 10 seconds of acceleration the athlete has reached her top speed. question Unfortunately, after 200 seconds of running at top speed, the athlete begins to get tired and starts to slow down. She slows down to 2.50 m/s over a 15 second time period. She then maintains this slower pace until she crosses the finish line 125 seconds later. To be clear: 10 seconds of acceleration, 200 seconds of running at top speed, 15 seconds slowing down, then 125 seconds running at 2.50 m/s. YOUR TASK is to create BOTH a position-time and velocity-time graph for this athlete's race. 1) Create a graph of the position-versus-time and the velocity-versus-time for the runner. Clearly label both x and y axes with appropriate units. (2 marks per graph). 2) Use your graphs to determine the total displacement of the athlete. (2 marks) Upload your graphs and typelshow all work done to solve this problem. Paragraph v (J- E The athlete's displacement will be: Question 14 Answer saved Marked out of 6.00 )7 Flag question IIIIIC Icll hut-Hm This is a Written Response question, Please show all of your work. (Equations, substitutions, calculations, etc) You may either enter your answers in the space provided, or take a picture of it with your phone (speak to your teacher about this first) and attach the tile in the file submission area provided for you. While rising upward at a speed of 12.5 m/s in a hot-air balloon, you accidentally drop your camera at a height of 15.0 m. a. Determine the maximum height the camera will reach after being released. Keep in mind that the hot-air balloon is travelling upward initially) (2 marks) b. If your camera is designed to withstand a speed of 20.0 m/s when it hits the ground, will your camera be damaged? Justify your answer. (2 marks) c. Determine the time required for the camera to hit the ground. (2 marks) Paragraph v (J E Question 15 Answer saved Marked out of 8.00 '(7 Flag question lime IBTI lib/163 This is a Written Response question. Please show all of your work. (Equations, substitutions, calculations, etc) You may either enter your answers in the space provided, or take a picture of it with your phone (speak to your teacher about this first) and attach the file in the file submission area provided for you. A football punter kicks a football with a velocity of 30.0 m/s at an angle of 45.00. a. Determine the horizontal and vertical components of the velocity. (2 marks) b. Calculate the time of flight of the football. (2 marks) c. Calculate the range (horizontal displacement) AND the maximum height of the football. (4 marks) Paragraph V L: '1 E3 Question 16 Not yet answered Marked out of 4.00 \\'7 Flag question Time left 1:57:32 A swimmer wants to cross a fastmoving river that is 50 meters wide. Assume the swimmer starts on the SOUTH edge of the river, and wants to swim NORTH across the river. The river flows at 4.0 m/s [W]. The swimmer can swim at 2.5 m/s. a) Is it possible for the swimmer to cross the river in a straight line? In other words, can the swimmer move directly North across the river (and not move downstream at all). Explain your answer with a calculation and diagram. (1 mark) b) If the swimmer points at [30 E of N] and tries to cross, how long will it take to cross, and how far downstream will the swimmer travel once they reach the north bank of the river.? (3 marks) Show all work done for each question. Upload written work if applicable. Paragraph v (j E