A 550 kg dragster accelerates from rest to a final speed of 110 m/s in 400 m (about a quarter of a mile) and encounters an average frictional force of 1200 N. What is its average power output in watts and horsepower if this takes 7.30 s

Explanation:

According to the energy conversation:

ΔK=

ΔK=

where,

are initial and final kinetic energy of the system.

= initial velocity of the system

=final velocity of the system

W= total work done on the system

= friction force

d= distance traveled

Given: =110m/s

d=400m

=1200N

=0m/s

t=7.3s

ΔK=

W= ΔK +

  =

a.

explanation:

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this