Situation 3: For the next three questions, consider the following: A driver traveling at 50 mph is 80 m from a wall the driver applies the brake immediately at a brake reaction time of 2 seconds and begins slowing the vehicle at 10 m/s. 47. Find the distance from the stopping point to the wall. 10.315 m 17.345 m 7.203 m 7.854 m a. b. C. d. time during deceleration.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Situation 3:
For the next three questions, consider the following: A driver traveling at 50 mph is 80 m from a wall ahead. If
the driver applies the brake immediately at a brake reaction time of 2 seconds and begins slowing the vehicle at
10 m/s.
47. Find the distance from the stopping point to the wall.
a
10.315 m
17.345 m
c.
7.203 m
d. 7.854 m
48. Determine the braking time or time during deceleration.
a. 2.23 s
b.
1.55 s
C.
5.41 s
d. 2.76 s
49. Assume that the brake efficiency of the vehicle is 70%, find the average skid resistance of the pavement.
a.
1.456
b. 1.550
c. 1.100
d. 2.761
50. Compute the thickness of a rigid pavement with a wheel load capacity of 54 kN, if the allowable tensile
stress of concrete is 1.6 MPa. Neglect the effects of dowels.
a.
b.
C.
d.
318 mm
381 mm
183 mm
138 mm
Transcribed Image Text:Situation 3: For the next three questions, consider the following: A driver traveling at 50 mph is 80 m from a wall ahead. If the driver applies the brake immediately at a brake reaction time of 2 seconds and begins slowing the vehicle at 10 m/s. 47. Find the distance from the stopping point to the wall. a 10.315 m 17.345 m c. 7.203 m d. 7.854 m 48. Determine the braking time or time during deceleration. a. 2.23 s b. 1.55 s C. 5.41 s d. 2.76 s 49. Assume that the brake efficiency of the vehicle is 70%, find the average skid resistance of the pavement. a. 1.456 b. 1.550 c. 1.100 d. 2.761 50. Compute the thickness of a rigid pavement with a wheel load capacity of 54 kN, if the allowable tensile stress of concrete is 1.6 MPa. Neglect the effects of dowels. a. b. C. d. 318 mm 381 mm 183 mm 138 mm
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