Solving Acceleration Problems in a Sports Car Rally

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In a sports car rally, a car accelerates from rest at 9.0 m/s² over 100 meters, and the goal is to determine if it can finish in under 4.5 seconds. The kinematic equation X = (1/2)at² is suggested to analyze the situation. Participants are encouraged to calculate whether the car completes the distance in the given time using the provided acceleration. If the car does not meet the time, the discussion focuses on finding the necessary acceleration to achieve it. Engaging with the problem enhances understanding of accelerated motion.
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I can't figure this problem out. Any help is greatly appreciated!

At a sports car rally, a car starting from rest accelerates uniformly at a rate of 9.0 m/s2 over a straight-line distance of 100m. The time to beat in this event is 4.5 s. Does the driver do it? If not, what must be the acceleration be to do so?

Thanks very much.
 
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Why don't you start by telling us what you know about accelerated motion. What have you done so far on the problem?
 
have you learned the kinematic equations?
 
X=(1/2)at^2
......use that equation (thats t squared)

X=distance
a= the accel.
t=time

I'd tell u the answer but what's the fun of not learning anything ;)...to see if he beats it see if he crosses the finish line (100m) in 4.5s with that accel...if he doesn't solve for a.
 

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