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April 24, 2014

Homework Help: physics

Posted by alexa on Saturday, July 2, 2011 at 10:23pm.

A dragster and driver together have mass 918.8 kg. The dragster,starting from rest,attains a speed of 25.8 m/s in .53s .
Find the average acceleration of the dragsters during this time interval. Answer in units of m/s^2.

What is the size of the average force on the dragster during this time interval?

Assume the driver has a mass of 73.6kg. What horizontal force does the seat exert on the driver?


Here is my work,but i dont know if i did it correctly:

Vf=Vi+a(delta t)
25.8=0+a(.53)
48.68=a

918.8(48.68)=44,726.5=F

73.6(48.68)=3,582.8N

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