Asked by kayla
the equation y=-16t2+120 can be used to represent the fruits height above the ground, where t represent time ,in seconds, after she threw the apple
Answers
Answered by
Damon
Well, actually she seems to have dropped it from 120 feet up or threw it horizontally.
If she threw it with any initial vertical speed Vi the equation would have been:
y = -16 t^2 + Vi t + 120
16 is about 1/2 of g in English units.
In general
y = -(1/2) g t^2 + Vi t + Hi
BUT
you did not ask any question.
If she threw it with any initial vertical speed Vi the equation would have been:
y = -16 t^2 + Vi t + 120
16 is about 1/2 of g in English units.
In general
y = -(1/2) g t^2 + Vi t + Hi
BUT
you did not ask any question.
Answered by
Henry2
Y = 120 - 16t^2 = 0 When the fruit hits gnd.
120 - 16t^2 = 0,
16t^2 = 120,
t = 2.74 s. = Time required for fruit to hit gnd.
120 - 16t^2 = 0,
16t^2 = 120,
t = 2.74 s. = Time required for fruit to hit gnd.