Arollercoaster car reaches a velocity of 2 m/s at the top of a hill and begins to accelerate down the hill. 4.5 seconds later it has reached the bottom of the hill and is traveling with a velocity of 11 m/s. what is the rollercoaster car's acceleration

first thing first of the answer is with technology. second thing second thing is that the big bang theory did not happened u see they say it did but what they dont realize is that like dinasures are still a round they might deny it but they and look at these 12 foot human skelteons they find lets see didnt the bible say something about giants. hope this peace.