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ZanzabumX [31]
3 years ago
8

7. A woman steps in front of a child to keep him from running off. Which term best describes this example? (2 po

Physics
2 answers:
aev [14]3 years ago
8 0
The answer is positive force
Anuta_ua [19.1K]3 years ago
4 0

Answer:

Negative force

Explanation:

Preventing a movement of a body is a Negative force.

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1 atom of oxygen

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3 years ago
What is not changed when work is done by a machine?
Irina18 [472]
B) The amount of work done
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3 years ago
Multiple-Concept Example 6 reviews the concepts that play a role in this problem. A diver springs upward with an initial speed o
adell [148]

Answer:

Part a)

v_f = 7.99 m/s

Part b)

y = 3.25 m

Explanation:

Part a)

Since the diver is moving under gravity

so here its acceleration due to gravity will be uniform throughout the motion

so here we will have

v_f^2 - v_i^2 = 2 a y

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Part b)

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0 - 2.22^2 = 2(-9.81)(y - 3)

y = 3.25 m

7 0
3 years ago
A box that has a weight of 40 N is hung from a spring. The spring constant of the spring is 400 N/m. How many centimeters will t
Andrej [43]
The mathematical relationship between force and extension for a spring is F = -kx , where F is the restoring force, k is the spring constant and x is the extension. If a box that weighs 40 N is hung from a spring of content 400 N/m, then the extension is equal to x = -F / k = -400 / 40 = -10 cm. The negative sign simply shows the extension and restoring force are in opposite directions. The answer is 10 cm. 
5 0
3 years ago
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