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riadik2000 [5.3K]
3 years ago
9

Calculate the amount of work done if you use a 100N force to push a 50kg box 5m across the kitchen floor.

Physics
2 answers:
irinina [24]3 years ago
6 0
So if the formula for work is force times displacement times cosine(theta), you'd plug in the numbers

100x5 (since there's no angle in the problem, cosine(theta) isn't used

100x5 = 500

So the answer would be B.

Hope that helps!
Naya [18.7K]3 years ago
3 0
We know, W = F * s
Here, F = 100 N
s = 5 m

Substitute their values, 
W = 100 * 5
W = 500 J

In short, Your Answer would be Option B

Hope this helps!
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Ludmilka [50]

Work = (force) x (distance)

Work = (21 Newtons) x (9 meters) = 189 Joules

Power = (work done) / (time to do the work)

Power = (189 Joules) / (3 sec)

Power = (63 watts/sec)

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3 years ago
What is the initial velocity of the object represented by the graph?
Arturiano [62]

Initial velocity of the object: 5 m/s

Explanation:

The figure in the problem is missing: find it in attachment.

The graph in the figure represents the velocity of an object (v) versus the time passed (t).

Here we are asked to find the initial velocity of the object.

This means that we have to find the velocity of the object when the time is zero, so when

t = 0

By looking at the corresponding value on the y-axis (velocity), we see that when t = 0, then

v = 5 m/s

Therefore, the initial velocity of the object is 5 m/s.

Learn more about velocity:

brainly.com/question/5248528

#LearnwithBrainly

5 0
3 years ago
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Korolek [52]

Answer:

b

Explanation:

5 0
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mixas84 [53]

Answer:

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jeyben [28]

Answer:

Atomic number of the daughter isotope = (Atomic number of the parent isotope) - 4

Explanation:

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