Supposed you were standing beneath a palm tree when a coconut began to fall. If the height of the coconut is 64 feet, how much time do you think you'd have to escape?

The time, t, available to escape is 1.994 s ≈ 2 seconds.

Step-by-step explanation:

To solve the question, we note the given variables as follows

Height of tree = 64 feet = ‪19.5072‬ m

Also, the equation of motion of an object in free fall is given as

h = u·t + ·g·t²

Where:

t = Time for the object to fall through h

u = Initial velocity of the object  = 0 m/s

g = Acceleration due to gravity = 9.81 m/s²

h = Height from which the object is falling = 64 ft = ‪19.5072‬ m

Therefore

19.5072 m = 0 m/s × t + ×9.81 m/s²×t²

19.5072 m = 4.905 m/s²·t²

19.5072 m ÷  4.905 m/s² = t²

3.977 s² = t²

t = 1.994 s

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

yes the data was not prsented

step-by-step explanation: