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2 years ago

9

All moving objects have momentum. momentum refers to the momentum of objects moving in a straight line and momentum refers

to the momentum of rotating objects.

1 answer:

Inessa [10]2 years ago

3 0

Answer: linear,angular

Explanation:

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An 88 kg worker stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale reads 900 N. Fi

Aleks [24]

Answer:

The magnitude is "3.8 m/s²", in the upward direction.

Explanation:

The given values are:

Mass,

m = 88 kg

Scale reads,

T = 900 N

As we know,

⇒ $N=mg$

On substituting the given values, we get

⇒ $=88\times 9.8$

⇒ $=862.4 \ N$

Now,

⇒ $T=mg-ma$

On substituting the given values in the above equation, we get

⇒ $900=862.4-9.8 a$

On subtracting "862.4" from both sides, we get

⇒ $900-862.4=862.4-9.8 a-862.4$

⇒ $37.6=-9.8a$

⇒ $a=-\frac{37.6}{9.8}$

⇒ $a=3.8 \ m/s^2$ (upward direction)

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3 years ago

Which equation best expresses the first law of thermodynamics, assuming Q is heat, U is internal energy, and W is work?

devlian [24]

The first law of thermodynamics is expresses by

D. ΔU=Q-W

which means change in internal energy of system = Heat added to system minus work done by the system

All are expressed in Joules.

This law is based on principle of conservation of energy.

5 0

3 years ago

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Two identical masses are moving down a slop. One mass is traveling twice as fast as the other mass. How does the kinetic energy

svp [43]

I believe it is D because the more weight the more total speed it will end with

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3 years ago

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Adaptive organ of duck

postnew [5]

Answer:

brain

Explanation:

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2 years ago

If the applied force (F) is 14 N and the frictional force (f) is 3 N, what would the acceleration be on this 3.5 kg box?

Helga [31]

Answer:a = F/m so

11/3.5 times= 3.14 m/s

Explanation:

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1 year ago