Correct answers only ! 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 metersb. 490 metersc. 980 metersd. 49 meters

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"

carla slowed down in the beginning of her trip, stopped, and then sped up