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Please help me answer the following questions. Please show step-by-step how you get your answers. 15. BA skateboarder shoots off a ramp with a velocity
Please help me answer the following questions. Please show step-by-step how you get your answers.
15. BA skateboarder shoots off a ramp with a velocity of 6.6 m/s, directed at an angle of 58 above the horizontal. The end of the ramp is 1.2 m above the ground. Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point on the ground directly below the top of the ramp. (a) How high above the ground is the highest point that the skateboarder reaches? Vog (b) When the skateboarder reaches the highest point, how far is this point horizontally from the end of the ramp? 2 ) Vox | VK ax T No = 6-6m/9 + 3. 5 O 580 Y Voy Vy Yea ? - 5- 6 mls O 1 - 9-8 R (- 2m ( Vox = (6. 6 mls) ws 580 = 35 m/s a ) Vy 2 = Voy? + zay. y Voy = (6.6 mls) sin 58= +5.6m/s 02 = (+ 5.6 mls) 2+ 2 ( - 9.8m/s). y y= - (5.6 mls2 ) = 1.6m 2 (-9.8 m/s ) Ytotal = 12 m + 16m = 2.8m b)- T= ? Vy Voy + ay. T Range : X= VoxT + 5 axT 0 = 5.6 mis + (- 9 8 ) T (3. 5 m/s ) + (0. 575) T= = 5-6 = T50.57 secs Ramp = 1.59 - 9.8(10) 1) Convert 12 kg/m2 to g/in2. 1 in = 2.54 cm = 0.0254 m 1 kg = 1000 g 2) Given the following two displacement vectors: A = 33 km, south B = 26 km, 35 north of west a) Show the resultant displacement (4) on the diagram. +y +X b ) Resolve the two displacement (10) vectors in their x and y components. A B 35 (10) c) Apply the method of vector addition by means of components to find the magnitude and direction of the resultant displacement from the harbor.3) A locomotive is accelerating at 1.2 mls\". It passes through a 30 mwide crossing in a time of 3.5 s. W illLn. " raven-'07 0' +x x=0m X=30m [5) a] Write known and unknown quantities. (5) b) Find the initial velocity. (10) c) Find the final velocity of locomotive. 4) When chasing a hare along a at stretch of ground. a greyhound leaps into the air at a speed of 11 miss, at an angle of 28 above the horizontal. a) Show the vo = 11 mfs acceleration vector of (4) the greyhound on the diagram. (5) C) For how much time is the greyhound in the air? (5) d) What is the range of his leap? (use 0.80 s for the time the greyhound is in the air if you did not solve c). (6) e) What is the velocity of the greyhound at the top of his trajectory?d) What is the range of his leap? (use 0.80 s for the time the greyhound is in the air if you did not solve c). (6) e) What is the velocity of the greyhound at the top of his trajectory? (10) 5. Find the resultant vector magnitude and direction. Show the resultant vectorStep by Step Solution
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