A football player releases a ball with the initial conditions shown in the figure. Determine the radius of curvature of the trajector times t= 0.5 sec and t = 1.1 sec, where t= 0Ois the time of release from the quarterback's hand. For each case, compute the time r of change of the speed. th = 67 ft/sec 8= 21°

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A football player releases a ball with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory at
times t = 0.5 sec and t = 1.1 sec, where t = 0 is the time of release from the quarterback's hand. For each case, compute the time rate
of change of the speed.
th = 67 ft/sec
8 = 21°
Answers:
For t = 0.5 sec, p=
i
ft, v =
i
ft/sec2
For t= 1.1 sec, p=
ft, v =
ft/sec2
Activa
i
Go to Se
Transcribed Image Text:A football player releases a ball with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory at times t = 0.5 sec and t = 1.1 sec, where t = 0 is the time of release from the quarterback's hand. For each case, compute the time rate of change of the speed. th = 67 ft/sec 8 = 21° Answers: For t = 0.5 sec, p= i ft, v = i ft/sec2 For t= 1.1 sec, p= ft, v = ft/sec2 Activa i Go to Se
The speed of a car increases uniformly with time from 39 km/h at A to 97 km/h at B during 20 seconds. The radius of curvature of the
hump at A is 48 m. If the magnitude of the total acceleration of the mass center of the car is the same at B as at A, compute the radius
of curvature pg of the dip in the road at B. The mass center of the car is 0.66 m from the road.
Assume PA = 48 m, h = 0.66 m.
Рв
В
Answer: PB -i
m
Transcribed Image Text:The speed of a car increases uniformly with time from 39 km/h at A to 97 km/h at B during 20 seconds. The radius of curvature of the hump at A is 48 m. If the magnitude of the total acceleration of the mass center of the car is the same at B as at A, compute the radius of curvature pg of the dip in the road at B. The mass center of the car is 0.66 m from the road. Assume PA = 48 m, h = 0.66 m. Рв В Answer: PB -i m
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