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babymother [125]
3 years ago
14

A student claims that any object in motion must experience a force that keeps it in motion. Do you agree or disagree? Explain yo

ur reasoning.
Physics
2 answers:
frosja888 [35]3 years ago
5 0

Answer:

I disagree

Explanation:

I think the students claim is wrong because according to Newton's First Law an object that is in motion stays in motion unless acted upon by an unbalanced force. Which makes the students claim wrong because a object doesn't require another force to keep it moving.

Karolina [17]3 years ago
3 0

Answer: agree

Explanation: because there is always a force that causes motion..

Also I’m back

Where’s the old gang?

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A train car with mass m1 = 515 kg is moving to the right with a speed of v1 = 7.5 m/s and collides with a second train car. The
Anna [14]

Answer:

For the first situation, we first need to find the mass of the second train car.

In order to do that, we apply the conservation of the amount of movement:

515*7.5+m2*0=(m1+m2)*4.8

and we have as a result:

m2 = 289.6875

For the second situation, also we will apply the conservation of the amount of movement:

515*7.5-289.6875*6 = (515+289.6875)*V

and we have as a result:

V = 2.64 (it is moving to the right)

6 0
3 years ago
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ludmilkaskok [199]
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6 0
3 years ago
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Why the reflected rays for a rough surface do not result in the formation of an image.
Oksana_A [137]

Answer:

this is because the light rays get reflected irregularly

Explanation:

8 0
2 years ago
If five joules were required to move a crate in 3.7 seconds, what power was applied?
AleksAgata [21]

Answer:

The answer to your question is 1.35 Watts

Explanation:

Data

Work = W = 5 J

time = t = 3.7 s

Power = P = ?

Formula

Power is a rate in which work is done or energy is transferred over time

P = \frac{W}{t}

Substitution

P = \frac{5}{3.7}

Result

P = 1.35 W

8 0
3 years ago
What is the length of a simple pendulum with a period of 2.0 s?
Mariana [72]
 we know 

T=2.pie sqr root(l/g)

l= (sqrof 7/22)*9.8

L= .99 or approx 1m

7 0
3 years ago
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