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3 years ago

Explain the difference between mass and weight and how they are measured.

Physics

2 answers:

devlian [24]3 years ago

6 0

Answer:

Explanation:

Mass is the matter in a material, while weight is the measure of how the force of gravity acts upon that mass.

aivan3 [116]3 years ago

4 0

Explanation:

Mass is something used to describe how much matter there is in a body and it is constant throughout the universe. In other words, if you are 70 kg here at earth, you will be 70 kg at the moon, mars etc. However, that is not the case with weight. Weight is a force counted in N ( Newtons ). It is used to describe how much earth pulls you to its center. that is why you see astronauts flying and jumping easily around at the moon, where here at earth its harder. That happens cause the earth is bigger than the moon, so it pulls you much harder, so you weight even more. To sum up:

Mass:

measures: matter
stays constant
counted in kg ( kilogram(s) )

Weight:

measures: pulling force
changes from place to place
counted in N ( Newton(s) )

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laila [671]

Answer:

Explanation:

Given

acceleration of rocket(a) $=5 m/s^2$

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$v^2-u^2=2as$

$v^2-0=2\times 5\times 1000$

$v=\sqrt{10^4}=100 m/s$

(b) time to reach v=100 m/s

v=u+at

$100=0+5\times t$

$t=\frac{100}{5}=20 s$

(c)Rocket maximum altitude

$v^2-u^2=2as$

here u=100 m/s

v=0

$a=9.8 m/s^2$

$s=\frac{v^2}{2g}$

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[tex]s=510.204

Therefore maximum altitude=510.204+1000=1510.204 m

7 0

3 years ago

Suppose you are taking a walk one day when you see a tree branch snap at its base and begin to rotate downward with the break ne

Naya [18.7K]

Answer:

α = 3.27 rad/s²

Explanation:

Given that

L= 3 m

Lets take mass of tree = m kg

The torque to mass m = m g .L

The mass moment of inertia of tree ,I

I = mL² kg.m²

We know that

τ = I α

m g .L = mL² .α

α= g/L

Now by putting the value

$\alpha =\dfrac{ 9.81}{ 3}\ rad/s^2$

α = 3.27 rad/s²

No we can find the mass of the from the above information because angular acceleration is not depend on the mass of tree.

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4 years ago

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Xelga [282]

A. direction is the right answer.

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3 years ago

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Ludmilka [50]

Answer:

Explanation:

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4 years ago

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Karo-lina-s [1.5K]

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4 years ago