The crossbow was a more effective weapon than the normal bow because it used a reel, giving more power to the bow string it was held horizontally it shoot a bolt rather than an arrow it could shoot harder and farther all of the above

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.