Hello can you solve number 18 for me? 20302050(s/u)atrip? [Hint: Does Eq. 2–12d apply, or not?]15 (II) Calculate the average speed and average velocity of acomplete round trip in which the outgoing 250 km iscovered at 95 km/h, followed by a 1.0-h lunch break, andthe return 250 km is covered at 55 km/h.161) The position of a ball rolling in a straight line is given byrage speed of the plane for this26. (II) A particular automobile can accelas shown in the velocity vs. time grapshort flat spots in the curve representEstimate the average acceleration ofgear; and (b) fourth gear. (c) What ition through the first four gears?=2.0 – 3.6 t + 1.1 t², where x is in meters and t inseconds. (a) Determine the position of the ball at t =2.0 s, and 3.0 s. (b) What is the average velocity over theinterval t = 1.0 s to t1.0s,3.0 s? (c) What is its instanta-4th geaneous velocity at t = 2.0 s and at t17. (II) A dog runs 120 m away from its master in a straight linein 8.4 s, and then runs halfway back in one-third the time.Calculate (a) its average speed and (b) its average velocity.18. (III) An automobile traveling 95 km/h overtakes a 1.10-km-long train traveling in the same direction on a track parallelto the road. If the train's speed is 75 km/h, how long does ittake the car to pass it, and how far will the car have traveledin this time? See Fig. 2-39. What are the results if the carand train are traveling in opposite directions?%3D40%3D3.0 s?%3Dear2nd gear1st gear0.FIGURE 2-40 Problem 2high-performance automcstarting from a dead stop.represent gear shifts.1.10 kmv = 75 km/h27, (II) A particle moves alotion of time is given byseconds and x is in mev = 95 km/hfunction of time?%3D28. (II) The position of at = 0 and moves in aFIGURE 2-39 Problem 18.%3Dtime in the following(b) its acceleration aTable and on a grap19. (III) A bowling ball traveling with constant speed hits thepins at the end of a bowling lane 16.5 m long. The bowlerhears the sound of the ball hitting the pins 2.50 s after theball is released from his hands. What is the speed of the ball,0.25(s)10.113.00 3.50(s)1x(m) 20.36 28.31assuming the speed of sound is 340 m/s?20. (1) A sports car accelerates from rest to 95 km/h in 4.5 s.a particular automobile is capable of29. (II) The positiowhere x is in m2-4 Accelerationunits of A andan acceleration of about 1.8 m/s. At this rate, how longdoes it take to accelerate from 80 km/h to 110 km/h?nrinter accelerates from rest to 9.00 m/s in 1.28 s.of time? (c)t = 5.0 s? (d)x = At + BtWhat is its average acceleration in m/s2?21. (I) At highway speeds,%3Dtion in (a) m/s2; (b) km/h²?

Name: Hello can you solve number 18 for me? 20302050(s/u)atrip? [Hint: Does
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Description: Hello can you solve number 18 for me? 20302050(s/u)atrip? [Hint: Does Eq. 2–12d apply, or not?]15 (II) Calculate the average speed and average velocity of acomplete round trip in which the outgoing 250 km iscovered at 95 km/h, followed by a 1.0-h lun