Assuming north as positive direction, the initial and final velocities of the ball are:

(with negative sign since it is due south)

the time taken is

, so the average acceleration of the ball is given by

And the positive sign tells us the direction of the acceleration is north.
Ethanol and biodoesel are also <u>cleaner-burning</u> fuels than pure gasoline and diesel fuel.
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The correct answer is:
~A. The greater the distance to a galaxy, the greater its redshift.
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Answer:
Water droplets acts as tiny prism in the sky. The sunlight when enters these tiny droplets undergo internal reflection and also refract these rays which are dispersed causing a band of seven colors called rainbow.
Explanation: