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3 years ago

There is an accident up the road from your car. You see other cars ahead of you. Who will stop first?

Physics

2 answers:

Rzqust [24]3 years ago

8 0

a small car!! hope this helps

snow_tiger [21]3 years ago

3 0

Answer:

According to the 2010 U.S. Census, there are approximately 8 million people living in Virginia. This is 2.8 million less than 4 times the population of Nevada.

What is the population of Nevada?

The first step is to on both sides.

The second step is to on both sides.

The population of Nevada is million.

Explanation:

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A 41.0 kg child is riding a playground merry-go-round that is rotating at 60.0 rev/min. What centripetal force (in N) is exerted

Tatiana [17]

Answer:505.94 N

Explanation:

Given

mass of child (m)=41 kg

N=60 rpm

$\omega =\frac{2\pi N}{60}=4\pi rad/s$

Radius(r)=1.25 m

and centripetal acceleration is given by $m\omega ^2r$

$F_c=41\times (4\pi )^2\times 1.25=505.94 N$

3 0

4 years ago

Which of the following is a possible measurement of velocity? A. 25 m B. 25 m/s C. 25 m east D. 25 m/s east

Kazeer [188]

Answer is B.
Because velocity is vector quantity, so magnitud and direction are needed to define it.
Since velocity means the speed(magnitude) of some object in a given direction, so it’s units are usually measured by meters/ seconds

3 0

3 years ago

Machines

Ainat [17]

Explanation:

Hey there!!

Here, Given is,

Efficiency = 75%

VR = no. of pulleys = 5

Now,

$effeciency = (\frac{ma}{vr} ) \times 100\%$

$75\% = \frac{ma}{5} \times 100\%$

100% ma = 75%×5

$ma = \frac{75\% \times5}{100\%}$

$ma = \frac{375\%}{100\%}$

Therefore, MA is 3.75.

Hope it helps...

3 0

3 years ago

Read 2 more answers

What is the speed of a 180 g ball if its kinetic energy is 100 J?

Vaselesa [24]

Answer:

Velocity, V = 33.33 m/s

Explanation:

Given the following data;

Mass = 180grams to kilograms = 180/1000 = 0.18 kg

Kinetic energy = 100J

To find the speed;

Kinetic energy can be defined as an energy possessed by an object or body due to its motion.

Mathematically, kinetic energy is given by the formula;

$K.E = \frac{1}{2}MV^{2}$

Where;

K.E represents kinetic energy measured in Joules.

M represents mass measured in kilograms.

V represents velocity measured in metres per seconds square.

Substituting into the equation, we have;

100 = ½*0.18*V²

Cross-multiplying, we have;

200 = 0.18*V²

V² = 200/0.18

V² = 1111.11

Taking the square root of both sides, we have;

Velocity, V = 33.33 m/s

3 0

3 years ago

Algal blooms, and the rapid proliferation of photosynthetic plankton can ultimately end up depleting all the oxygen from a body

Irina18 [472]

Answer: The given statement is True.

The proliferation of photosynthetic planktons results in harmful algal blooms. Due to this, the surface of the water body gets completely covered with algal bloom. This blocks the sunlight as it can not penetrate the water. Due to this, photosynthetic planktons are no more able to perform photosynthesis. This ultimately ends up depleting all oxygen from the body of water.

Thus, the given statement is true.

6 0

3 years ago

Read 2 more answers