Ch 03 HW Enhanced EOC: Exercise 3.13 7 of 23 Constants Part A A car comes to a b

Question

Ch 03 HW Enhanced EOC: Exercise 3.13 7 of 23 Constants Part A A car comes to a bridge during a storm and finds the bridge washed out The driver must get to the other side, so he decides to try leaping i with his car The side the car is on is 202 m above the river, whereas the opposto side is a mere 1.5 m above the river. The ver itselt is a raging forrent 50 0 m wide How fast shouid the car be traveling just as t leaves the cliflin order to just clear the iver and land safely on the opposite side? View Available Hints) You may want to review(Page) For help with math skills, you may want to review Vector Magoitudes For general problem-solving tps and strategies for this 37.1 m/s toc, you may want to vew a Video Tutor Solton of Submit Previous Answers Incorrect: Try Again; 4 attempts remaining Part 8 What s the speed of the car just before it lands safely on the other side? View Avalilable Hintisl in/s Submit

Explanation / Answer

a) vertical displacement

y - y0 = v0y t + 1/2 ay t2

20.2 - 1.5 = 1/2 * 9.8 * t2

t = 1.95 s

vx = x - x0 / t = (50 - 0) / 1.95

vx= 25.6 m/s

b) vy = v0y + ay t

= 0 + (9.8 * 1.95) = 19.1 m/s

v = sqrt [25.62 + 19.12]

= 31.9 m/s

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