The following graph depicts the change in energy per second of an 84.0 kg boulder as it falls off a cliff to the ground.

After 3 seconds, what is the approximate speed of the boulder?
833 m/s
3.00 x 104 m/s
O 3.50 x 104 m/s
28.9 m/s

When you turn on a battery-operated device, an electrical circuit is

How is the gravitational force related to the distance between two objects?

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?