Posted by Brandon on Wednesday, September 17, 2008 at 3:58pm.
As a traffic light turns green, a waiting car starts with a constant acceleration of 6.0 m/second squared. At the instant the car begins to accelerate, a truck with the constant velocity of 21 m/ second squared passes in the next lane. HINT:Set the 2 distance equations equal to each other. How far will the car travel before it overtakes the truck? How fast will the car be traveling when it overtakes the truck?

Physics  bobpursley, Wednesday, September 17, 2008 at 4:07pm
The "Hint" is the solution.
distancecar1=1/2 a*t^2
distancecar2=vo*t + 1/2 a t^2
but car2 has a=0
set distances equal, so
1/2 at^2=vot and solve for t.

Physics to bobursley  Barndon, Wednesday, September 17, 2008 at 4:56pm
can u go back to my problem and explain it differently because my teacher has only taught us 4 equations of motion and they r d=(v intial +v final)/2 times t, v final=v intial+at, d= v intial(t)+1/2at^2, v final^2=v intial^s + 2ad

Physics  bobpursley, Wednesday, September 17, 2008 at 4:59pm
No, I cant. consider your third equation, isn't it what I used?

Physics for bobpursley  Brandon, Wednesday, September 17, 2008 at 5:07pm
ohhhhhhhhhhh i get it now thanks
Answer This Question
Related Questions
 physics  As a traffic light turns green, a waiting car starts with a constant ...
 Physics  At the instant a traffic light turns green, a car starts with a ...
 Physics  The instant a traffic light turns green a car that has been waiting at...
 physics  At the instant a traffic light turns green, a car starts moving with a...
 Physics  At the instant the traffic light turns green, a car that has been ...
 Physics  As a traffic light turns green, a waiting car starts with a constant ...
 Physics  At the instant a traffic light turns green, a car starts moving with a...
 physics  The car stationary in front of a red traffic light. As the light turns...
 physics  The car stationary in front of a red traffic light. As the light turns...
 physics  At the instant the traffic light turns green, an automobile starts ...
More Related Questions