If an object is thrown upward on earth from a height of 50 feet, with an initial velocity of 32 feet per second
a. write an equation to represent the height, h, after t seconds.
b. after how many seconds will it reach a height of 30 feet?
c. what is the max height achieved by the object?
d. how long does it take to reach the max height?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.