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creativ13 [48]
4 years ago
9

Write an essay convincing a non-active person that swimming is beneficial. Create a swim test. Please dont take from other sourc

es.
Physics
1 answer:
strojnjashka [21]4 years ago
3 0

A nonactive person should go swimming because swimming is a great exercise and when you are swimming the bones are more oiled up and they are more lubed and moveable. There are so many benefits that swimming help, for example, swimming helps keep your heart rate up but takes some of the impact stress off your body, it builds endurance, muscle strength and cardiovascular  fitness, it helps you maintain a healthy weight, and healthy heart and lungs, it also helps tones muscles and builds strength, and lastly it provides an all-over body workout, as nearly all of your muscles are used during swimming. Swimming is a way to relax peacefully, alleviate stress, improving coordination balanced and posture, it improves flexibility. Before going to swim make sure you warm up and stretch your muscles and joints, have plenty of fluid on hand and drink regularly. Swimming has become one of the most popular sports in Australia and the nation is surrounded by water and swimming which is one of the huge passions that people have created. Its one way to have fun, keep fit, stay healthy and make friends. Swimming is also a healthy activity that you can continue for a lifetime and it has a low-impact that had many physical and mental health benefits. Swimming has helped a lot of special need kids, it's also an exercise that doctors recommend a lot to all their patients if they got an injury or when they have to do some kind of special exercise


Swim Test:


1. Jump into the pool, submerge fully, return to the surface and immediately begin swimming without pushing off the wall.

2. Swim in a horizontal position on top of the water using a forward crawl or breaststroke. The swimmer's arms must achieve full extension on every stroke, and he or she must maintain one or both of the strokes for the full 25-yard swim. Pausing is only allowed when the swimmer is rotating or turning to breathe.

3. Exit the pool without assistance using either the wall or pool ladder.

4. do 4 laps in 3 minutes

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telo118 [61]
The answer is E. Short and thick while cold.
4 0
4 years ago
A 5 kg wooden block sitson a flat straight-away12 meters fromthe bottom of an infinitely long ramp, which has an angle of 20 deg
saveliy_v [14]

Answer:

(a) 19.71801m/s Velocity just before going up the ramp.

(b) 74.56338m.

Explanation:

We will solve it in two parts, first we will calculate time that 5kg wooden block would take to just reach ramp and with this time we will calculate final velocity that the wooden block would have in this time.

Second, we will calculate the component of velocity vector along inclined plane and the time that it would take for velocity to be 0 meters/s then with this time we will calculate the distance that inclined plane would travel along inclined plane.

Following formulas will be used.

                                  x(t) = \frac{1}{2} t^2 = 12m =16.2m/s^2 t^2

                                 F =ma

                                 V(t) = V_{o} +at

                                 x(t) = x_{0} +v_{0}t+\frac{1}{2}a t^2

(a) Calculating velocity right before going up the ramp.

 Wooden block is going on a straightaway and has net for on it.

         F_{n} =F-F_{s} = F-uF_{n}  = 100N-0.4*9.8m/s^2*5kg =81N

     and this force produces acceleration of

      a = \frac{F}{m}=\frac{81}{5} =16.2m/s^2 .

With this acceleration, wooden block would reach at the foot of ramp in.

          x(t) = 12m = 16.2m/s^2*t^2

         t = 1.217s

and final velocity will be

v(t) = v_{0}+at = 0+16.2m/s^2*1.2171s = 19.7180m/s.

this velocity of wooden box just before going up the ramp.

(b) How far up the ramp will the wooden block go before stopping.

Ramp is at 20° relative to horizontal therefore velocity along the ramp that the wooden block would have will be.

                              V= V_{h}cos(20) = 18.5288m/s

and deceleration along the ramp is

                              a = \frac{F_{s} }{m}

 Where F_{s} force of friction along the inclined plane.

F_s =  uF_n = u*m*a

a = 9.8m/s^2*cos(20) = 9.2089m/s^2

is a component of g along normal of the inclined plane.

                               F_{s} = 0.25*5kg*9.2089m/s^2

                              = 11.5112N

                              a = \frac{11.5112N}{5kg} = 2.3022m/s^2

And with this deceleration time needed to get wooded block to stop is.

                     v(t) = v_o-at = 18.5288m/s-2.3022m/s^2*t = 0

                        t = \frac{18.5288m/s}{2.3022m/s^2} =8.04813s

 and in that time wooden block would travel

   x(8.04813s) = 18.52881m/s *8.04813s-\frac{1}{} 2.3022m/s^2*(8.0481)^2=74.56338m

This is how up wooden box will go before coming to stop.

3 0
3 years ago
21. A 60 kg student on a scooter is pushed with a constant force of 40 N across a horizontal concrete driveway at a constant spe
DedPeter [7]

The magnitude of the force of friction is 40 N

Explanation:

To solve the problem, we just have to analyze the forces acting on the student and the scooter along the horizontal direction. We have:

- The constant pushing force forward, of magnitude F = 40 N

- The frictional force, acting backward, F_f

Since the two forces are in opposite direction, the equation of motion is

F-F_f = ma

where

m is the mass of the student+scooter

a is the acceleration

However, here the scooter is moving at constant speed: this means that its acceleration is zero, so

a = 0

And therefore,

F - F_f = 0\\F_f = F

which means that the magnitude of the force of friction is also equal to 40 N.

Learn more about force of friction here:

brainly.com/question/6217246

brainly.com/question/5884009

brainly.com/question/3017271

brainly.com/question/2235246

#LearnwithBrainly

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3 years ago
How long does it take for changed in an ecosystem to be reversed
rusak2 [61]
That certain change from that ecosystem will require 50 years or longer because big ecosystems need a long time to restablize the living ecosystem.
5 0
4 years ago
The diagram shows the scales used for recording
padilas [110]

Answer: 212

Explanation:

3 0
3 years ago
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