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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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an echo travels a distance equivalent to 2d, that is to and fro after it reflects from the obstacle.

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A ball is falling at terminal velocity. Terminal velocity occurs when the ball is in equilibrium and the forces are balanced. Wh
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Answer:

A free body diagram with 2 forces: the first pointing downward labeled F Subscript g Baseline 20 N and the second pointing upward labeled F Subscript air Baseline 20 N.

Explanation:

This is because at terminal velocity, the ball stops accelerating and the net force on the ball is zero. For the net force to be zero, equal and opposite forces must act on the ball, so that their resultant force is zero. That is F₁ + F₂ = 0 ⇒ F₁ = -F₂

Since F₁ = 20 N, then F₂ = -F₁ = -20 N

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So, a free body diagram with 2 forces: the first pointing downward labeled F Subscript g Baseline 20 N and the second pointing upward labeled F Subscript air Baseline 20 N best describes the ball falling at terminal velocity.

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