1. Amy is riding on a train. She wants to sit at the front of the train for a better view, so she gets up to change her seat. Just as she starts walking toward the front of the train, it pulls into a station and stops.
a. Describe Newton’s First Law of Motion.
b. Describe what happens to Amy when the train stops.

2.
a. How are weight and mass different?
b. Explain why an object’s weight is dependent upon where in the universe it is located.

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

The two required components for a generator are

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.