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sdas [7]
3 years ago
11

You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of reference he has a speed of 3 m/s

to the south. What is the velocity of the man from the frame of reference of a stationary observer? (2 points)
Physics
1 answer:
kupik [55]3 years ago
5 0
The answer to this question would be: 1m/s

When you are walking to the north with 2m/s velocity, the stationary object(velocity=0m/s) will look like moving south at 2m/s velocity. That happens because the relative distance between you and the object is reduced by 2m/s in both conditions. In this question, the man seems like have 3m/s velocity. The real velocity should be:
3m/s - 2m/s = 1m/s
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<em>here</em><em>,</em>

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3 years ago
The particles of a substance stay close together but slide past one another as they move when thermal energy is added to the sub
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Answer: A liquid to gas

Explanation: I just got it wrong :(

6 0
3 years ago
An object with a mass of 2000 kg accelerates 8.3 m/s2 when an unknown force is applied to it. What is the amount of the force?
exis [7]

Answer:

<h2>16,600 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

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From the question we have

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Answer:

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Now, we know that, a spring-mass system undergoes Simple Harmonic Motion (SHM). The frequency of oscillation of SHM is given as:

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Rewrite the above equation in terms of 'm'. This gives,

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Now, plug in the given values and solve for 'm'. This gives,

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Therefore, the mass of the truck is 3331.5 kg.

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