I am having problems with these two questions. this is my firsttime taking physi

Question

I am having problems with these two questions. this is my firsttime taking physics, and i would like help solving these twoproblems.

my first questions is
1. a sports car can accelerate from 0 to 60 in 3.9s. what is themagnitude of average acceleration of the car in meters per secondsquared?

2. two riders on dune buggies sit 10m apart on a long straighttrack, facing in opposite directions. Starting at the same time,both riders accelerate at a constant rate of 2.0m/s squared. howfar apart will the dune buggies be at the end of 3.0s?

Explanation / Answer

Magnitude of Average Acceleration = (speed final- speeedinitial)/(time final-time initial) = 60/3.9 = 15.4 m/s^2 Let x be the distance traveled x=(1/2)at^2 x= (1/2)(2)(3)^2=9 m Since they travel in opposite directions and start 10m aparteach travels 9m. So they are 28m apart in 3 seconds.

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