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zubka84 [21]
3 years ago
12

Lus

Physics
1 answer:
patriot [66]3 years ago
7 0

Answer:

hey but the person at the top is right

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Find the time it takes for each object to accelerate from 0m/s to 40 m/s when pushed with 100N of force
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Answer:

40s

Explanation:

Given:

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t=40/1

t=40s

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A ball is projected horizontally from the top of a bertical building 25.0m above the ground level with an initial velocity of 8.
kirill115 [55]

Answer:

Solution given:

height [H]=25m

initial velocity [u]=8.25m/s

g=9.8m/s

now;

a. How long is the ball in flight before striking the ground?

Time of flight =?

Now

Time of flight=\sqrt{\frac{2H}{g}}

substituting value

  • =\sqrt{\frac{2*25}{9.8}}
  • =2.26seconds

<h3><u>the ball is in flight before striking the ground for 2.26seconds</u>.</h3>

b. How far from the building does the ball strike the ground?

<u>H</u><u>o</u><u>r</u><u>i</u><u>z</u><u>o</u><u>n</u><u>t</u><u>a</u><u>l</u><u> </u>range=?

we have

Horizontal range=u*\sqrt{\frac{2H}{g}}

  • =8.25*2.26
  • =18.63m

<h3><u>The ball strikes 18.63m far from building</u>. </h3>
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3 years ago
PLEASE HELP. Really important
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Explanation:

2) C would need the least effort, because the longer the effort distance, the least the effort applied.

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