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3 years ago

11

If a plane is traveling at a velocity of 100 km/hr East, and if the wind velocity is 25 km/hr to the East, then what is the velo

city of the plane relative to an
observer on the ground below?
100 km/hr East
75 km/hr West
75 km/hr East
125 km/hr East

1 answer:

kkurt [141]3 years ago

5 0

Answer:

75 west

Explanation:

I think not sure lucky guess

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Modern vehicles are designed ________ in a crash to absorb kinetic energy?

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2 years ago

A small branch is wedged under a 200 kg rock and rests on a smaller object. The smaller object is 2.0 m from the large rock and

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Answer:

a

$F =326.7 \ N$

b

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Explanation:

From the question we are told that

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The length of the small object from the rock is $d = 2 \ m$

The length of the small object from the branch $l = 12 \ m$

An image representing this lever set-up is shown on the first uploaded image

Here the small object acts as a fulcrum

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substituting values

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So at equilibrium the sum of the moment about the fulcrum is mathematically represented as

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Here $\theta$ is very small so $cos\theta * l = l$

and $cos\theta * d = d$

Hence

$F * l - W * d = 0$

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substituting values

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3 years ago

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Nesterboy [21]

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