1. A 1.5 kg book falls off a table that is 1.5 m from the floor. At what time will the book land on the floor? A. 1.0 seconds
B.2.5 seconds
C. 0.55 seconds
D. 0.25 seconds

2. A ball is dropped from a window and it takes 3 seconds for the ball to hit the ground. How high is the window?
A. 15 meters
B .132 meters
C.44 meters
D. 217 meters

=force × distance a. work b. velocity c. pressure d. momentum

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.