The table represents the height of a rock that is dropped h (t) in meters after t seconds What does the rock hit the ground the rock hits the ground between seconds and second after it is dropped

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

2160ft3

step-by-step explanation:

30005

yes ok                                            

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a