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diamong [38]
3 years ago
8

A missile is launched vertically from a missile silo, it will explode after 32 s. It's launch speed was 145 m/s, and it doesn't

accelerate after launch. Will the missile have hit its highest point before it explodes? Will it have landed before it explodes?​
Physics
1 answer:
Karolina [17]3 years ago
4 0

Answer:

Landed before it explodes

Explanation:

vf = vi + at,

0 = 145 - (9.8)t,

t = 14.79 s (Time to reach highest point)

14.79 x 2 = 29.59 s (Time to land on the ground)

It will have landed before it explodes because both the time to reach the highest point and the time to land on the ground are less than 32 seconds.

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Explanation:

For resolution of this exercise we use projectile launch expressions, let's see the scope

      R = Vo² sin (2θ) / g

      sin 2θ = g R / Vo²

      sin 2θ = 9.8 75/35²

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To know how for the arrow the tree branch we calculate the height of the arrow at this point

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We calculate the time to reach this point since the speed is constant on the X axis

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        t2 = 1.13 s

With this time we calculate the height at this point

        Y = Voy t - ½ g t²

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With the height of the branch is 3.5 m and the arrow passes to 6.23, it passes over the branch

8 0
3 years ago
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Explanation:

hope this helps have a good day

6 0
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How much time will it take to do 33j of work with 11 w of power
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Time required : 3 s

<h3>Further explanation </h3>

Power is the work done/second.

\tt P=\dfrac{W}{t}\\\\P=power,j/s,watt\\\\W=work, J\\\\t=times=s

 

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\tt t=\dfrac{W}{P}\\\\t=\dfrac{33}{11}\\\\t=\boxed{\bold{3~s}}

8 0
3 years ago
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