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Ksju [112]
3 years ago
5

Timed! I would really appreciate some help! thank you!

Physics
1 answer:
GenaCL600 [577]3 years ago
4 0

Answer:

x = 5[km]

Explanation:

We must convert the time from minutes to hours.

t=30[min]*\frac{1h}{60min}= 0.5[h]\\

We know that speed is defined as the relationship between space and time.

v=x/t

where:

x = space [m]

t = time = 0.5 [h]

v = velocity [m/s]

Now replacing:

x = 10[\frac{km}{h} ]*0.5[h]\\x=5[km]

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Velocity is speed plus direction, so an example of velocity would be a vehicle traveling at 75mph north. Velocity is a vector quantity because it describes both magnitude and direction.
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3 years ago
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An ore car of mass 39000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 25 m lower vert
Musya8 [376]

Answer:

x = 5.79 m

Explanation:

given,

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using conservation of energy

potential energy is converted into spring energy

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x =\sqrt{\dfrac{2 m g h}{k}}

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x =\sqrt{33.5263}

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the spring is compressed to x = 5.79 m to stop the car.

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A 1.90-m-long barbell has a 25.0 kg weight on its left end and a 37.0 kg weight on its right end. if you ignore the weight of th
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At the balance point: m_1x_1=m_2x_2

25 kg\times x=37 kg\times (1.90-x)

x=1.1338 m

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Answer:

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. mathematician

. physicist

. astronomer

. theologian

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