The first question wasn't a train. It was a bicycle. "A cyclist accelerates uniformly from rest to 6 m/s in 4 seconds. Calculate the acceleration and the distance traveled."
No calculation. Just a sentence.
a = (v - u) / t = (6 - 0) / 4 = 1.5 m/s². Then: s = ut + ½ at² = 0 + ½ (1.5)(16) = 12 meters. test fizika 9
A pendulum: mass 0.2 kg, height difference 0.3 m. Find maximum speed at the bottom. The first question wasn't a train