Asked by Hayden
a plane moving horizontally at 120 m/s drops a package from an elevation of 240 m. How far did the package go before it hit the ground?
Step by step directions please!
Step by step directions please!
Answers
Answered by
Damon
How long was it falling?
It fell 240 m with no initial vertical velocity
a = -g = -9.8 m/s^2
Vo = 0
Zo = 240 m
Zfinal = 0 m
so
0 = 240 + 0 - (1/2)(9.8) t^2
4.9 t^2 = 240
t = 7 seconds in the air
NOW
there are no horizontal forces on it so it keeps going ahead at 120 m/s for the 7 seconds, moving 840 m horizontal.
By the way unless it turned or changed speed, the plane also moved 840 m during the 7 seconds and the bomb burst right under the plane. It is best to turn and ascend after dropping a bomb.
It fell 240 m with no initial vertical velocity
a = -g = -9.8 m/s^2
Vo = 0
Zo = 240 m
Zfinal = 0 m
so
0 = 240 + 0 - (1/2)(9.8) t^2
4.9 t^2 = 240
t = 7 seconds in the air
NOW
there are no horizontal forces on it so it keeps going ahead at 120 m/s for the 7 seconds, moving 840 m horizontal.
By the way unless it turned or changed speed, the plane also moved 840 m during the 7 seconds and the bomb burst right under the plane. It is best to turn and ascend after dropping a bomb.
Answered by
Hayden
thank you!!