The function y=−16x2+v0x models lindy's height in feet above a trampoline x seconds after she jumps straight up. in the equation of the function, v0 is her initial velocity in feet per second. lindy lands back on the trampoline 1 second after she jumps.

The initial velocity of Lindy was 16 ft/s

Step-by-step explanation:

Given:

It is function models of Lindy's Height in feet above a trampoline x seconds after she jumps straight up.

In the equation of the function

is initial velocity in feet per second.

We need to find the initial speed of Lindy

If She lands back on the trampoline after 1 seconds.

It means y must be zero because she lands back on trampoline.

At x=1, y must be 0

Hence, The initial velocity of Lindy was 16 ft/s

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.

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.