Physics Review Question Unit: type the regents category here Year: 1994 Question#: 10 Question: A car is traveling at a constant speed of 14 m/s along a straight highway. A tree and a speed limit sign are behind a highway. As it passes a tree, the car starts to accelerate, the car is accelerated uniformly at 2.0 m/s2 until it reaches the speed limit sign, 5.0 sec. later. 10. What is the distance between the tree and the sign? (1 ) 10m (2 ) 25m (3 ) 70m (4 ) 95m What is this question really asking? Explanation by: Danny A [ Return to question menu ] Answer 1 10m INCORRECT Try using the displacement formula. s=vii(t)+1/2 (a)(t2) return to top Answer 2 25m INCORRECT Try using displacement formula. s=vii(t)+1/2 (a)(t2) return to top Answer 3 70m INCORRECT Try using the displacement formula. s=vii(t)+1/2 (a)(t2) return to top Answer 4 95m CORRECT In this problem you would want to find out the displacement which would mean you would use: s=vii(t)+1/2 (a)(t2) vi = 14m/s a = 2m/2 t = 5 seconds return to top What's this question really asking? How many meters between the tree and the sign? return to top This web site is designed and maintained by Science Joy Wagon and may not be reproduced or redistributed without written permission from Science Joy Wagon. Contact with comments.