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
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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
