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Nady [450]
4 years ago
11

A horizontal spring with spring constant 210 Nm is compressed by 20 cm and then used to launch a 250 g box across the floor. The

coefficient of kinetic friction between the box and the floor is 0.23. What is the box's launch speed?
Physics
1 answer:
Damm [24]4 years ago
3 0

Answer:

ugmd = 1/2 kx²

d = (1/2 kx²) / (ugm)

= (1/2 * 250 N/m * (0.2 m)²) / (0.23 * 9.81 m/s² * 0.3 kg)

= 7.4 m

ugmd = 1/2 mv²

v = √2ugd

= √(2(0.23)(9.81 m/s²)(7.4 m)

= 5.8 m/s

Explanation:

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Serhud [2]

Answer:

Michael's final velocity is 19.62 m/s.    

Explanation:            

We can find the final velocity of Michael by using the following kinematic equation:

v_{f} = v_{0} + at   (1)    

Where:

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v_{f} = 1.62 m/s + 1.2 m/s^{2}*15 s

v_{f} = 19.62 m/s

Therefore, Michael's final velocity is 19.62 m/s.

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7 0
3 years ago
Th answer and how to do it (please do it on paper and send a picture if you can )
Umnica [9.8K]
If series Rs = R1 + R2

8 0
3 years ago
A constant net force is applied to an object. Suddenly, the object's mass doubles, but the net force remains the same. For this
____ [38]

<u>D: Half</u>

We know that,

F = m.a, where F is the force, m is the object's mass and a is the acceleration.

In the first case, we observed that a1 = F/m.

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By the ratio of the two cases, we get

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8 0
3 years ago
Which vector is the sum of vectors à and b?
Wittaler [7]

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Disclaimer: your question is incomplete, please see below for the complete question.

The image shows the complete question.

Which vector is the sum of vectors à and b?

Learn more about vectors here:- brainly.com/question/25705666

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7 0
2 years ago
After a surface interval my pressure group is D. I want to do a repetitive dive to 38 feet for 32 minutes. What will be my new p
ExtremeBDS [4]

Answer:

New pressure group is N

Explanation:

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5 0
3 years ago
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