Can I have detailed answers to question 9-27

I don't really understand

CHAPTER 2 REVIEW Knowledge 8. (2.4) For an object thrown vertically upward. 1. (2.2) During the Terry Fox Run, a participant what is the object's initial horizontal velocity? travelled from A to D. passing through B and C. Copy and complete the table using the information Applications in the diagram, a ruler calibrated in millimetres, 9. The air medivac, King Air 200, flying at 250 knots and a protractor. In your notebook, draw and (1 knot = 1.853 km/h), makes the trip between label the displacement vectors AB, BC, and CD Edmonton and Grande Prairie in 50 min. What and the position vectors AB, AC, and AD. distance does the plane travel during this time? Assume the participant's reference point is A. 10. A golf ball is hit with an initial velocity of scale 30.0 m/s [550]. What are the ball's range and 2.0 km maximum height? Ad =5.0 km [E] D 11. Off the tee box, a professional golfer can drive a Ad= 3.0 km [E) |Ad= 2.0 km [N) ball with a velocity of 80.0 m/s [10]. How far will the ball travel horizontally before it hits the ground and for how long is the ball airborne? Distance Final Displacement 12, A canoeist capable of paddling north at a speed of Ad (km) position Ad (km) 4.0 m/s in still water wishes to cross a river 120 m d (km) [direction] wide. The river is flowing at 5.0 m/s [E]. Find [direction] (a) her velocity relative to the ground reference b) the time it takes her to cross point AB 13. An object is thrown horizontally off a cliff with an initial speed of 7.50 m/s. The object strikes BC - the ground 3.0 s later. Find CD - (a) the object's vertical velocity component AC when it reaches the ground AD (b) the distance between the base of the cliff and the object when it strikes the ground 2. (2.2) Determine the x and y components of the (c) the horizontal velocity of the object 1.50 s displacement vector 55 m [222]. after its release 3. )(2.4) What is the vertical component for velocity 14. If a high jumper reaches her maximum height as at the maximum height of a projectile's trajectory? she travels across the bar, determine the initial 4.)(2.4) During a field goal kick, as the football rises, velocity she must have to clear a bar set at 2.0 m what is the effect on the vertical component of if her range during the jump is 2.0 m. What its velocity? assumptions did you make to complete the calculations? 5. (2.1) Fort Mcmurray is approximately 500 km [N] of Edmonton. Using a scale of 15. An alligator wishes to swim north, directly 1.0 cm : 50.0 km, draw a displacement vector across a channel 500 m wide. There is a current representing this distance. of 2.0 m/s flowing east. The alligator is capable of swimming at 4.0 m/s. Find 6. (2.1) Give one reason why vector diagrams must (a) the angle at which the alligator must point be drawn to scale. its body in order to swim directly across the 7. (2.2) Using an appropriate scale and reference channel coordinates, graphically solve each of the (b) its velocity relative to the ground following: (c) the time it takes to cross the channel (a) 5.0 m [S] and 10.0 m [N] (b) 65.0 cm [E] and 75.0 cm [E] 16. A baseball player throws a ball horizontally at (c) 1.0 km [forward] and 3.5 km [backward] 45.0 m/s. How far will the ball drop before (d) 35.0 km [right] -45.0 km [left] reaching first base 27.4 m away? 114 Unit 1 Kinematics17. How much time can you save travelling diagonally instead of walking 750 m [N] and 27. An airplane is approaching a runway for landing then 350 m [E] if your walking speed is 7.0 m/s? The plane's air velocity is 645 km/h [forward) 18. How long will an arrow be in flight if it is shot moving through a headwind of 32.2 km/h. The at an angle of 25 and hits a target 50.0 m away, altimeter indicates that the plane is dropping at at the same elevation? a constant velocity of 3.0 m/s (down). If the plane is at a height of 914.4 m and the range 19. A pilot of a small plane wishes to fly west. The from the plane to the start of the runway is plane has an airspeed of 100 km/h. If there is a 45.0 km. does the pilot need to make any 30-km/h wind blowing north, find adjustments to her descent in order to land the (a) the plane's heading plane at the start of the runway? (b) the plane's ground speed Consolidate Your Understanding 20. At what angle was an object thrown if its initial launch speed is 15.7 m/s, it remains airborne for Create your own summary of kinematics by answering 2.15 s, and travels 25.0 m horizontally? the questions below. If you want to use a graphic organizer, refer to Student References 4: Using 21. A coin rolls off a 25.0 incline on top of a Graphic Organizers on pp. 869-871. Use the Key 2.5-m-high bookcase with a speed of 30 m/s. Terms and Concepts listed on page 113 and the How far from the base of the bookcase will the Learning Outcomes on page 68. coin land? 1. Create a flowchart to describe the different 22. Starting from the left end of the hockey rink, the components required to analyze motion in a goal line is 3.96 m to the right of the boards, the horizontal plane and in a vertical plane. blue line is 18.29 m to the right of the goal line, 2. Write a paragraph describing the similarities and the next blue line is 16.46 m to the right of the differences between motion in a horizontal plane first blue line, the goal line is 18.29 m right, and and motion in a vertical plane. Share your the right board is 3.96 m right of the goal line. thoughts with another classmate. How long is a standard NHL hockey rink? 23. A plane with a ground speed of 151 km/h Think About It is moving 110 south of east. There is a wind Review your answers to the Think About It questions on blowing at 40 km/h, 450 south of east. Find page 69. How would you answer each question now? (a) the plane's airspeed (b) the plane's heading, to the nearest degree 24. How long will a soccer ball remain in flight if it is kicked with an initial velocity of 25.0 m/s e TEST [35.0]? How far down the field will the ball To check your understanding of two-dimensional travel before it hits the ground and what will be . . ....... motion, follow the eTest links at its maximum height? www.pearsoned.ca/school/physicssource. . 25. At what angle is an object launched if its initial vertical speed is 3.75 m/s and its initial horizontal speed is 4.50 m/s? Extensions 26. During the Apollo 14 mission, Alan Shepard was the first person to hit a golf ball on the Moon. If a golf ball was launched from the Moon's surface with a velocity of 50 m/s [35 ] and the acceleration due to gravity on the Moon is -1.61 m/s?, (a) how long was the golf ball in the air? (b) what was the golf ball's range? Chapter 2 Vector components describe motion in two dimensions. 115