An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m. What is the (constant) acceleration of the vehicle during this time?
Question 13 options:
1) 8.0 m/s
2) 9.6 m/s
3) 12 m/s
4) 6.9 m/s
5) 0.20 m/s

Question

An automobile moving along a straight track changes its velocity from 40 m/s to 80 m/s in a distance of 200 m. What is the (constant) acceleration of the vehicle during this time?
Question 13 options:
	1)	8.0 m/s
	2)	9.6 m/s
	3)	12 m/s
	4)	6.9 m/s
	5)	0.20 m/s

turingtest · Answer

Fundamental kinematic equation:$$v_f^2=v_i^2+2ad\to a=\frac{v_f^2-v_i^2}{2d}$$now just plug in the numbers

anonymous · Answer

3 is correct 
from independent equation motion we have it