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2 years ago

What are the three main ideas associated with Newton's second law of motion

2 answers:

6 0

The three main ideas related to Newton’s Second Law are as follows :
1.Acceleration is the result of unbalanced forces.
2.A larger force makes a proportionally larger acceleration.
3.Acceleration is inversely proportional to mass.

Hope this helps!

Aleks [24]2 years ago

4 0

<span>The proper way of using the meter stick is first place the meter stick against the object you wish to measure make sure that the end of the meter stick that has the lowest numbers (most start with 1 centimeter) should be your beginning point of measurement, and will be placed at the end of the object. Note how far up the object extends on the meter stick and finally record your measurement.

</span>Percentage error is define as the percent difference<span> is the absolute value of the </span>difference over the mean times 100 while <span>standard error or standard deviation of the mean is </span><span>the sample standard deviation divided by the square root of the number of data points.
</span>

<span>Hope my answer would be a great help for you.
If </span>you have more questions feel free to ask here at Brainly.

You might be interested in

What is the concentration of H+ ions at a pH = 2? mol/L What is the concentration of OH– ions at a pH = 2? mol/L What is the rat

densk [106]

Answer:

In Step 5, you will calculate H+/OH– ratios for more extreme pH solutions. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide for a solution at a pH = 2. Then divide the H+ concentration by the OH– concentration. Record these concentrations and ratio in Table C.

What is the concentration of H+ ions at a pH = 2?

0.01 mol/L

What is the concentration of OH– ions at a pH = 2?

0.000000000001 mol/L

What is the ratio of H+ ions to OH– ions at a pH = 2?

10,000,000,000 : 1

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I LITERALLY spent 40 MINUTES trying to figure out this question, so please, use my VERY CORRECT answers!

I hope this helps!

4 0

2 years ago

Suppose you want to design an air bag system that can protect the driver at a speed 100 km/h (60 mph) if the car hits a brick wa

34kurt

When solving question that contains equations and the use mathematical computations, It is always ideal to list the parameters given.

Now, given that:

the speed of the car which is the initial velocity (u) = 100 km/h before it hits the wall.
after hitting the wall, the final velocity will be (v) = 0 km/h

Assumptions:

Suppose we make an assumption that the distance travelled during the collision of the car with the brick wall (S) = 1 m
That the car's acceleration is also constant.

∴

For a motion under constant acceleration, we can apply the kinematic equation:

$\mathsf{v^2 = u^2 + 2as}$

where;

v = final velocity

u = initial velocity

a = acceleration

s = distance

From the above equation, making acceleration (a) the subject of the formula:

$\mathsf{v^2 - u^2 =2as }$

$\mathsf{a = \dfrac{v^2 - u^2 }{2s}}$

The initial velocity (u) is given in km/h, and we need to convert it to m/s as it has an effect on the unit of the acceleration.

since 1 km/h = 0.2778 m/s

100 km/h = 27.78 m/s

$\mathsf{a = \dfrac{(0)^2 - (27.78)^2 }{2(1)}}$

$\mathsf{a = \dfrac{- 771.7284 }{2}}$

a = - 385.86 m/s²

Similarly, from the kinematic equation of motion, the formula showing the relation between time, acceleration and velocity is;

v = u + at

where;

v = 0

-u = at

$\mathsf{t = \dfrac{-u}{a}}$

$\mathsf{t = \dfrac{-27.78}{-385.86}}$

t = 0.07 seconds

An airbag is designed in such a way as to prevent the driver from hitting on the steering wheel or other hard substance that could damage the part of the body. The use of the seat belt is to keep the driver in shape and in a balanced position against the expansion that occurred by the airbag during the collision on the brick wall.

Thus, we can conclude that the airbag must be inflated at 0.07 seconds faster before the collision to effectively protect the driver.

Learn more about the kinematic equation here:

brainly.com/question/11298125?referrer=searchResults

3 0

3 years ago

Determina la velocidad de un avión que recorre 459 km en 67 min

satela [25.4K]

Answer:

122397.7

Explanation:

4 0

2 years ago