30 points for 2 questions karen drops a 2.0 kg rock from the top of a mountain. determine the distance the rock travels after falling for 3 seconds assuming it has reached free fall and given the gravitational acceleration of 9.8 m/sec^2 downward. [hint: distance=(0.5)*(acceleration)*(time ^2)] what can we say about karen’s rock as it falls? a) the rock has a constant velocity b) the rock has an acceleration of -9.8m/s2 c) the rock accelerates for the 1st second and decelerates