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yulyashka [42]
3 years ago
6

A car driving around a track is an example of projectile motion. a. True b. False

Physics
2 answers:
Ostrovityanka [42]3 years ago
7 0

Answer:

False

Explanation:

A projectile motion is the example of two dimensional motion under the influence of gravity.

For example, a ball is thrown with some velocity which makes an arbitrary angle between 0 degree and 90 degree with the horizontal.

So, a car driving around a track is not the example of two dimensional motion. thus, it is not an example of projectile motion.

Degger [83]3 years ago
5 0

the answer is.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................<u>FALSE.</u> You are welcome everybody :) GOod luck to all of you people. Peace love and coconut oil ॐ

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expeople1 [14]

Answer:

Rice

Explanation:

Bro just dip it in rice thatd the only way to go

4 0
3 years ago
A metal block of mass 265 g rests at a point 2.4 m from the center of a horizontal rotating wooden platform. The coefficient of
FrozenT [24]

Answer:

The minimum angular velocity of the platform what whould the block slides away is w= 2.26 rad/s.

Explanation:

m= 0.265 kg

r= 2.4 m

μ= 0.257

g= 9.8 m/s²

W= m * g

W= 2.597 N

Fr= μ * W

Fr= 0.66 N

∑F = m * ac

W+Fr = m * ac

(W+ Fr) / m = ac

ac= 12.29 m/s²

ac= w² * r

√(ac/r)= w

w= 2.26 rad/s

3 0
4 years ago
4. Which are characteristics of an atom? (Choose all that apply.)
Zarrin [17]

Answer:

4.

Explanation:

7 0
3 years ago
Read 2 more answers
Question 4 (2 points)
d1i1m1o1n [39]

Answer:

t = 1.15 + .713 = 1.863 [s]

Explanation:

To solve this problem we must use the following kinematic equation, but first we identify the initial data.

vo = 7 [m/s]

yo = 4 [m]

g = 9.81[m/s^2]

v_{f}=v_{o}-g*t\\0 = 7 - (9.81*t)\\7 = 9.81*t\\t = 0.713[s]

The final velocity happens at the moment when the maximum height is reached, at this point the final speed is zero.

y=y_{o}+v_{o}*t-0.5*g*t^{2}\\ y = 0+ (7*0.713)-0.5*9.81*(0.713)^{2}\\ y = 2.5[m]

The total elevation will be 2.5 + 4 = 6.5 [m]

Now using again the total height we can find the final velocity.

v_{f}^2=v_{o}^2+2*g*y\\v_{f}=\sqrt{2*g*y}\\ v_{f}=\sqrt{2*9.81*6.5}\\ v_{f}=11.3[m/s]

With this final velocity we cand find the time.

v_{f}=v_{i}+g*t\\11.3=0+9.81*t\\11.3=9.81*t\\t=1.15[s]

Now we have to sum the two times, the time it takes to go up and the time it takes to go down.

t = 1.15 + .713 = 1.863 [s]

7 0
3 years ago
El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una corr
Solnce55 [7]

La respuesta correcta para esta pregunta abierta es la siguiente.

No incluyes opciones, incisos, o alguna referencia específica para responder esta pregunta.

De ahí que responderemos en términos generales basándonos en nuestro conocimiento previo.

El concepto cosmológico abarca todo lo relativo a la cosmología y, al unir este término con la metafísica sería posible una correcta asociación la cual sería benéfica para ambos campos de conocimiento porque de esta manera se estarían complementando y enriqueciendo el uno al otro.

Cuando la ciencia -en este caso, la cosmología- acepte los conceptos metafísico que no tienen un sustento científico pero que sí contemplan alternativas en el mundo espiritual que son aceptadas por una innumerable cantidad de personas, entonces los expertos podrán plantear nuevas y diferentes posibilidades de entender los fenómenos que al día de hoy, carecen de una convincente explicación.

Tanto la cosmología como la metafísica podrían mostrarse más receptivos a las aportaciones de una y la otra, con objeto de poder aumentar las posibilidades de comprender un fenómeno. No necesariamente debe haber una teoría científica para poder avanzar en el conocimiento de algún tema. De ahí que las aportaciones metafísicas sean válidas como una alternativa de investigación.

5 0
3 years ago
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