The function y=-16t^2+8t represents the height y (in feet) of a grasshopper jumping straight up from the ground t seconds after the start of the jump. After how many seconds is the grasshopper 1 foot off the ground?

Guest Jan 8, 2019

#1**+2 **

You want to solve the given equation for y = 1

1=-16t^2+8t re-arrange

-16t^2+8t-1 = 0 solve for t using quadratic formula a = -16 b = 8 c = -1

t= 1/4 sec

ElectricPavlov Jan 8, 2019

#1**+2 **

Best Answer

You want to solve the given equation for y = 1

1=-16t^2+8t re-arrange

-16t^2+8t-1 = 0 solve for t using quadratic formula a = -16 b = 8 c = -1

t= 1/4 sec

ElectricPavlov Jan 8, 2019