A400 kg object is sitting at rest at the top of a hill that is 30.0m high and 80.0m long measured along the hill . if there is no friction ,how fast will the object be going at the bottom of the hill?

Since the investigative question has two variables, you need to focus on each one separately. thinking only about the first part of the question, mass, what might be a hypothesis that would illustrate the relationship between mass and kinetic energy? use the format of "if…then…because…” when writing your hypothesis.

What will a positive and a negative charge do if they are separated from each other?

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •