Question

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!


A plane is flying east when it drops some supplies to a designated target below. The supplies land after falling for 10 seconds. How high above the ground was the airplane when the supplies were dropped? (Hint: d = 1/2gt^2; g = -9.8 m/s^2)


A. 120 meters


B. 490 meters


C. 980 meters


D. 49 meters

Answer 1

They literally gave you the answer but okay.

Correct answer should be: B. 490 Meters

1/2 x 9.8 x 10^2

Plug them in a calculator and you get 490 meters.

G = Gravity which is 9.8 m/s^2

T= Time

Answer 2

Answer: B

Explanation:

NOTES:

g = -9.8 meters/second²

t = 10 seconds

**********************************

d = (1/2) g t²

   = (1/2) (-9.8 meters/second²)(10 seconds)²

   = (1/2) (-9.8 meters/second²)(100 seconds²)

   = (1/2) (-980 meters)

   = -490 meters   The negative sign means lowered or "dropped"