A soccer ball is kicked from the roof of a building with a height of 45.0m, near the surface of the Earth, with an initial velocity vi=14.2m/s. The ball exists the surface of the roof moving horizontally. A) How long is the ball in the air?

B)How far away from the base of the building does the ball land?

C) How fast is the ball moving just before it strikes the ground?

D) At what angle does the ball strike the ground? This angle is measured with respect to the horizontal direction.

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

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?

Convection occurs when thermal energy is transferred by the movement of