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ioda
4 years ago
7

An airplane starts its takeoff by moving at 1.7 m/s. The plane must then accelerate at 3.0 m/s2 for the next 30s to reach its fi

nal takeoff speed. To the nearest tenth of a kilometer, how far does the plane travel while accelerating to its takeoff speed?
Physics
1 answer:
otez555 [7]4 years ago
7 0

Answer:

The distance is 1.4 km.

Explanation:

Given that,

Initial velocity u= 1.7 m/s

Accelerate a= 3.0 m/s²

Time = 30 s

We need to calculate the distance

Using equation of motion

s= ut+\dfrac{1}{2}at^2

Where, u = initial velocity

a = acceleration

t = time

Put the value in the equation

s=1.7\times30+\dfrac{1}{2}\times3.0\times(30)^2

s=1401\ m

s=1.4\ km

Hence, The distance is 1.4 km.

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Answer:

Percentage change in tension is 3.8%

Explanation:

We have given initially frequency f_1 = 440 Hz

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