A 873 kg dragster, starting from rest, attains a speedof 26.3 m/s in 0.59 s. A)

Question

A 873 kg dragster, starting from rest, attains a speedof 26.3 m/s in 0.59 s. A) find the average accerleration of the dragster during thistime interval? B)What is the size of the average force on the dragster duringthis time interval?
C) Assume the driver has a mass of 68 kg. What horizontal forcedoes the seat exert on the driver? D) Is the driver's mass in part C an inertial mass or agravitational mass? A 873 kg dragster, starting from rest, attains a speedof 26.3 m/s in 0.59 s. A) find the average accerleration of the dragster during thistime interval? B)What is the size of the average force on the dragster duringthis time interval?
C) Assume the driver has a mass of 68 kg. What horizontal forcedoes the seat exert on the driver? D) Is the driver's mass in part C an inertial mass or agravitational mass?

Explanation / Answer

Given : .                   Mass of draster (M) = 837 kg .                    Initial velocity (u) = 0   ; Finalvelocity (v) = 26.3 m /s ; time (t) =0.59 s . (a)   From Equation of motion : .                           v = u + a t .               or    26.3 = 0 + ( a* 0.59 ) .               or      a     =   44.57 m /s2 . (b)    Average force is : .                          F    = m (v - u ) / t   = 873( 26.3 - 0) / 0.59 = 38.9 * 103  N . (c)     mass (m) = 68 kg ; .          Force is: F = m a = 68 * 44.75 m/s2    = ----------- N . (d)     Force due to gravitational mass is: .           F = mg   = 68 * 9.8 m/s2    = ----------- N . Solve the above. . Hope this helps u!

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