A helicopter is ascending vertically with a constant speed of 5.20 m/s. At a height of 125
m above ground, a package is dropped from the helicopter.
a) How much time does it take to reach the ground?
b) How far above ground is the helicopter when the package lands?

Constant speed refers to a speed that remains constant throughout the duration of the motion. Constant speed is demonstrated in our example of using cruise control while driving a car.

Briefing:

Using this formula:

t= √(h/g)

h= 125m

g= 9.2 m/s

t = √(125/9.2)

t = √13.59

t= 3.69 s

The package must touch the ground in 3.69 seconds.

From equation of motion s = u t + 1/2 a t².

Here a= 0, then s= ut

s= 5.2x 3.69 = 19.18 m.

Total height = 19.18 + 125 = 144.18 m.

Helicopter is 144.18m far above from the ground when the package lands.

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A helicopter is ascending vertically with a constant speed of 5.20 m/s. At a height of 125 m above ground, a package is dropped from the helicopter. a) How much time does it take to reach the ground? b) How far above ground is the helicopter when the package lands?

Respuesta :

What is constant speed and example ?

Briefing:

Otras preguntas

A helicopter is ascending vertically with a constant speed of 5.20 m/s. At a height of 125
m above ground, a package is dropped from the helicopter.
a) How much time does it take to reach the ground?
b) How far above ground is the helicopter when the package lands?