A ball is thrown in the air from the top of a building. Its height, in meters above ground, as a function of time, in seconds, is given by . h(t)=-16t^2+56t+30 1. How high is the building? Explain how you know this.
2.How many seconds does it take to reach maximum height?
3What is the maximum height?

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

step-by-step explanation:

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answer: correct

step-by-step explanation: