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3 years ago

explain why applying force to an object does not always result in work being done. 20 POINTS WILL MARK BRAINLIEST

1 answer:

7 0

Applying force all the time is bad for you body, the object, and the environment and how it looks at you. First of all, you could strain, break, fracture, you name it, to your bones and muscles. Second of all, you could manage to break that object, not even move it. For example, say you have to move a heavy object to save the town from almost flooding and you strain or break your arm. To society or the people watching you do this, you look like a wimp or you're not strong. Then you have a bad reputation in the people's eyes and you get picked on or bullied because of that. You don't have move that object. You could find a way to work around the object and get simpler ways that only you thought of at the time.

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The use of a beat or a rhythm to remember something is

Mamont248 [21]

<span>The answer is Music Mnemonics. Mnemonic is originally coming from the Ancient Greek word means “memory”. It is the study and development of systems for improving and assisting the memory. Mnemonic techniques are more specific memory aids. Music Mnemonic is a way we used to remember song lyrics and rhythmic movement.</span>

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3 years ago

Read 2 more answers

Is centripetal acceleration always positive?

andrezito [222]

No. it can be zero acceleration
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4 years ago

A water wave has a frequency of 2 HZ and a wavelength of 5 meters what is its speed

Sliva [168]

Speed, v = fλ.

Where f is the frequency in Hertz, wavelength is in meters.

Speed, v = 2*5 = 10

Speed = 10 m/s.

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3 years ago

Sally walks 10 meters forward and then 5 meters backwards. Which statement most accurate describes the magnitude of her displace

djverab [1.8K]

1. A) Sally's displacement is 5m less than her distance travelled.

Explanation:

- Distance is the total distance travelled by Sally, regardless of her direction. In this case, Sally has travelled 10 meters forward and then 5 meters backward, so the distance travelled is

$d = 10 m + 5 m=15 m$

- Displacement, instead, is the difference between the final position and the initial position of Sally, which means that we have to calculate the vector sum of all the movements made by Sally. Assuming 'forward' as positive direction, this means that Sally's displacement will be:

$d = 10 m +(-5 m)=+5 m$ (forward)

Therefore, we can conclude that Sally's displacement (5 m) is 5 m less than her distance travelled (10 m).

2. B) acceleration due to gravity is always the same

According to Newton's second law:

$F=ma$

by re-arranging it, we find the acceleration of an object:

$a=\frac{F}{m}$ (1)

The only force acting on an object in free fall is the gravity, so $F=mg$ , where m is the mass of the object and g is the acceleration due to gravity. Substituting into (1):

$a=\frac{mg}{m}=g$

So, the acceleration of an object in free fall does not depend on the mass of the object, but only on the value of g, which is the same for every object.

4 0

4 years ago

Read 2 more answers

100 meters toward the shore in 25 seconds

Rzqust [24]

Answer:

The speed of a turtle is 4m/s

Explanation:

speed = distance/time

distance = 100m

time = 25s

s = 100/25

= 4m/s

6 0

4 years ago