PLEASE HELP SOON I DONT UNDERSTAND THIS QUIZ

Chuck drops a rock from a height of 70 m. How long will it take the rock to hit the ground?

Use the formula h(t)=−4.9t^2+v0t+h0, where v0 is the initial velocity and h0 is the initial height.

Round to the nearest tenth of a second. Enter your numeric answer.

PLEASE HELP SOON I DONT UNDERSTAND THIS QUIZ Chuck drops a rock from a height of 70 m How long will it take the rock to hit the ground Use the formula ht49t2v0 class=
PLEASE HELP SOON I DONT UNDERSTAND THIS QUIZ Chuck drops a rock from a height of 70 m How long will it take the rock to hit the ground Use the formula ht49t2v0 class=
PLEASE HELP SOON I DONT UNDERSTAND THIS QUIZ Chuck drops a rock from a height of 70 m How long will it take the rock to hit the ground Use the formula ht49t2v0 class=
PLEASE HELP SOON I DONT UNDERSTAND THIS QUIZ Chuck drops a rock from a height of 70 m How long will it take the rock to hit the ground Use the formula ht49t2v0 class=
PLEASE HELP SOON I DONT UNDERSTAND THIS QUIZ Chuck drops a rock from a height of 70 m How long will it take the rock to hit the ground Use the formula ht49t2v0 class=