1. How far should the car be traveling just as it leaves the cliff in order to j
ID: 1523853 • Letter: 1
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1. How far should the car be traveling just as it leaves the cliff in order to just clear the river and land safely on the opposite side 2. What is the speed of the car just before It lands safely on the other side Course Checkout Payment Info I Textbook Un Physics 111 Spring 2017 HW-Chapter3 Enhanced EOC: Exercise 3.13 Enhanced EOC: Exercise 3.13 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 it with his car. The side the car is on is 20.7 m above the river, whereas the opposite side is a mere 1.6 m above the river. The river itself is a raging torrent 69.0 m wide. You may want to review (Da pages 77-85) For help with math skills, you may want to review: Vector Magnitudes For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Different initial and final heightsExplanation / Answer
Speed = constant = U, the initial speed
distance = U t = 69 m
Vertical problem:
falls (20.7 - 1.6) =19.1 meters DOWN
initial speed down = 0
so
19.1 = (1/2) (9.8) t^2
weight has no effect on this problem, only the acceleration of gravity
19.1 = 4.9 t^2
t^2 = 1.97
t = 1.97 seconds to9 fall
same t to reach the other bank so
U = 69 meters / 1.97 seconds
= 35.02 meters/sec
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