The function relating the height of an object off the ground to the time spent falling is a quadratic relationship. travis drops a
tennis ball from the top of an office building 90 meters tall. three seconds later, the ball lands on the ground. after 2
seconds, how far is the ball off the ground?
the ball is on the ground after 3 seconds right so it would still be on the ground
c = 4 a
the given function p(c) = - 15 c (c-8) is actually quadratic function:
p(c) = - 15c² + 120c or parabola
the standard form of a quadratic function is:
y = ax² + bx + c
for which x is the maximum of the parabola we can find with this formula
x = - b/2a
in this case a = -15 and b = 120 and input variable is current c
c = - 120/(2 · (-15)) = - 120/ (-30) = 4 a
c = 4 a
god with !