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Papessa [141]
3 years ago
10

Match the type of fitness with the correct example.

Physics
2 answers:
posledela3 years ago
8 0

Answer:

an exercise that stretches your back - Flexibility

lifting a heavy object - Muscular fitness

a fast walk in the park - cardiovascular fitness

a jumping exercise that makes you breathe hard - cardiovascular fitness

touching your toes - Flexibility

moving heavy bags - Muscular fitness

running - cardiovascular fitness

You're Welcome

Explanation:

jeyben [28]3 years ago
7 0

cardiovascular fitness: 3, 4, 7

flexibility: 1, 5

muscular fitness: 2, 6

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I'd guess at valve B. more information about the interesting question would help.
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3 years ago
A yo‑yo with a mass of 0.0800 kg and a rolling radius of =2.70 cm rolls down a string with a linear acceleration of 5.70 m/s2.
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Explanation:

Given that,

Mass, m = 0.08 kg

Radius of the path, r = 2.7 cm = 0.027 m

The linear acceleration of a yo-yo, a = 5.7 m/s²

We need to find the tension magnitude in the string and the angular acceleration magnitude of the yo‑yo.

(a) Tension :

The net force acting on the string is :

ma=mg-T

T=m(g-a)

Putting all the values,

T = 0.08(9.8-5.7)

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(b) Angular acceleration,

The relation between the angular and linear acceleration is given by :

\alpha =\dfrac{a}{r}\\\\\alpha =\dfrac{5.7}{0.027}\\\\=211.12\ m/s^2

(c) Moment of inertia :

The net torque acting on it is, \tau=I\alpha, I is the moment of inertia

Also, \tau=Fr

So,

I\alpha =Fr\\\\I=\dfrac{Fr}{\alpha }\\\\I=\dfrac{0.328\times 0.027}{211.12}\\\\=4.19\times 10^{-5}\ kg-m^2

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3 0
3 years ago
A student throws a rock upwards. The rock reaches a maximum height 2.4 seconds after it was released.
Allisa [31]

Answer:

23.52 m/s

Explanation:

The following data were obtained from the question:

Time taken (t) to reach the maximum height = 2.4 s

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Initial velocity (u) =..?

At the maximum height, the final velocity (v) is zero. Thus, we can obtain how fast the rock (i.e initial velocity)

was thrown as follow:

v = u – gt (since the rock is going against gravity)

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0 + 23.52 = u

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Therefore, the rock was thrown at a velocity of 23.52 m/s.

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3 years ago
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Answer:

Wash your hand when you are done using the restroom because you could spread germs if not.

Don't come to school if you are sick because then you will get others sick.

Explanation:

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