Explanation:
First calculate the deceleration rate:
a = F/m
= (7.25 [tex]\times[/tex] 10^5 N) / (3.5 [tex]\times[/tex] 10^5 kg)
a = 2.071 m/s^2 .
speed = 10 [tex]\times[/tex] 2.071
= 20.71 m / s making the speed as 54.29 m/s at that time.
(i.e. subtracting the two speeds = 75 m/s - 20.71 m/s = 54.29 m / s.)
Average speed =( 75 m/s + 54.29 m/s) / 2 = 64.645 m / s.
distance traveled = average speed [tex]\times[/tex] time
= 64.645 [tex]\times[/tex] 10
distance traveled = 646 m.