+0

0
70
3
+4

How long will it take a car to go from a complete stop to 44 km/hr if they are accelerating at 5km/hr2?

Oct 21, 2021

#1
+115338
+1

$$\ddot x=5\\ \dot x = 5t\\ when\\ \dot x = 44\\ 5t=44\\ t=8.8 \;hours$$

I have not bothered with constants because when t=0, x=0 and v=0

Oct 21, 2021
#2
0

vf = at

44 =  (5) t

44/5 = t = 8.8 hr

Oct 21, 2021
#3
0

8.8 hours...........

Guest Oct 21, 2021