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sineoko [7]
3 years ago
11

How much work is done when a 100 N force moves a block 20 meters

Physics
1 answer:
Damm [24]3 years ago
5 0

Answer:

Hope this helps if not so sorry ;-;

Explanation:

Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F *

Note:

Have a nice day :)

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A ball is thrown from a top of a building of height 20m. If the initial velocity of the ball is 15m/s at 370 above the horizonta
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Explanation:

Givens:

h = 20 \: m

v _{ix} = 15 \cos(37)  = 11.97

v _{iy} = 15 \sin(37)  = 9.03

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Let t=2 be the final velocity. Since Velocity stays the same horizontal , acceleration due to gravity changes the vertical direction

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Plug in the knowns

v _{y} = 15 \sin(37)  +2 ( - 9.8)

v _{y} =   - 10.57

So the velocity in the y direction at 2 seconds is -10.57

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Use the Pythagorean theorem to find the total velocity

v =  \sqrt{( - 10.57) {}^{2} + (11.97) {}^{2}  }

v = 15.97

b. The range at which it strike the ground.

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h =  \frac{1}{2} ( 9.8)(0.921) {}^{2}  = 4.16

So the total distance is 4.16+20= 24.16

Next to find the total time it falls

24.16 =  \frac{1}{2} (9.8) {t}^{2}

t = 2.2

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3.141

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