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IceJOKER [234]
3 years ago
14

Help ... plz

Physics
1 answer:
Alona [7]3 years ago
3 0

<u>Benefits of strength and muscular endurance exercises and two examples:</u>

Of several purposes, muscle strength and endurance are beneficial, like as follows

  • increasing potential to do things such as doing daily routine work
  • carrying boxes or wood cutting before getting exhausted
  • reducing the risk of injury
  • helping you to maintain a healthy body weight
  • contributing to healthier muscles and bones
  • enhancing morale and feeling about yourself.

The two examples for strength and muscular endurance exercises are: Plank and Body weight squats.

Squats shape the human body part which is used to sit (butt) and entire body, reduce fat, strengthen posture, increase blood circulation, boost your flexibility.  

While plank helps to reinforce the heart, hikes metabolism, decline back pain by supporting backbone, improved joint health, balance mood and relieved stress.

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Answer:

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Pachacha [2.7K]
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5 0
3 years ago
A 5kg ball is on top of the school building at a height of 40m above the ground.
mojhsa [17]

Answer:

A-Caclcuate the potential energy of the ball at that height

Explanation:

(a). Mass of the Body = 10 kg.

Height = 10 m.

Acceleration due to gravity = 9.8 m/s².

Using the Formula,Potential Energy = mgh

= 10 × 9.8 × 10 = 980 J.

(b). Now, By the law of the conservation of the Energy, Total amount of the energy of the system remains constant.

∴ Kinetic Energy before the body reaches the ground is equal to the Potential Energy at the height of 10 m.

∴ Kinetic Energy = 980 J.

(c). Kinetic Energy = 980 J.

Mass of the ball = 10 kg.

∵ K.E. = 1/2 × mv²

∴ 980 = 1/2 × 10 × v²

∴ v² = 980/5

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∴ v = 14 m/s.

3 0
2 years ago
A stone is dropped from the top of a tower. What is its velocity after 3.0 seconds?
kap26 [50]

For purposes of completing our calculations, we're going to assume that
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The acceleration of gravity on Earth is about 9.8 m/s², directed toward the
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increases by 9.8 m/s for every second that it falls.

3 seconds after being dropped, a stone is falling at (3 x 9.8) = 29.4 m/s. 

That's the vertical component of its velocity.  The horizontal component is
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force on the stone during its fall.

5 0
3 years ago
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