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saveliy_v [14]
3 years ago
11

Jen pushed a box for a distance of 80m with 20 N of force. How much work did she do?

Physics
1 answer:
Drupady [299]3 years ago
8 0
The answer is 1,600 J.

A work (W) can be expressed as a product of a force (F) and a distance (d):
W = F · d<span>

We have:
W = ?
F = 20 N = 20 kg*m/s</span>²
d = 80 m
_____
W = 20 kg*m/s² * 80 m
W = 20 * 80 kg*m/s² * m
W = 1600 kg*m²/s²
W = 1600 J
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vovangra [49]

Part a)

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so in horizontal direction the speed of clam will remain same

v_x = 2.70 m/s

Part b)

In vertical direction we can use kinematics

v_f = v_i + at

v_f = 0 + 2.1 * 9.8

v_f = 20.6 m/s

part c)

if the speed of crow will be increased then the horizontal speed of the clam will also increase but there is no change in the vertical speed

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2 years ago
HELP DUE TONIGHT<br><br> What is friction? How does friction affect the motion of an object?
hram777 [196]

Answer:

Friction always acts in the direction opposing motion. This means if friction is present, it counteracts and cancels some of the force causing the motion (if the object is being accelerated).

Explanation:

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3 years ago
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Leviafan [203]

Answer:

lymph nodes

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Explanation:

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-Capillaries are blood vessels that connect the veins and arteries and are part of the circulatory system.

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-Veins are the vessels that take the blood to the heart and they are part of the circulatory system.

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According to this, cells or organs that are considered to be part of both the immune and lymphatic systems are:

lymph nodes

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Ostrovityanka [42]
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3 years ago
A hollow conductor is positively charged. Asmall uncharged metal ball is lowered by a silk thread through asmall opening in the
dimulka [17.4K]

Answer:

Explanation:

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So option (c) is correct.

8 0
3 years ago
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