A.10 kg hockey puck is at rest. it encounters a force of 20 n for 0.2 seconds that sets it in motion. over the next 2 seconds it encounters 0.4 newton’s of resistance force. finally it encounters a final force of 24 n for 0.05 seconds in the direction of motion. what is the final velocity of the hockey puck? ?

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

How does an observation about an object differ from an inference about that object

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.