1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mr Goodwill [35]
3 years ago
12

A small mailbag is released from a helicopter that is descending steadily at 2.00 m/s. After 5.00s what is the speed of the mail

bag
Physics
1 answer:
grandymaker [24]3 years ago
7 0
The acceleration of gravity (on Earth) is 9.8 m/s² downward.

This means that every falling object gains 9.8 m/s more downward speed
every second that it falls.

In 5 seconds of falling, it gains (5 x 9.8 m/s) = 49 m/s of downward speed.

If it was already descending at 2.0 m/s at the beginning of the 5 sec,
then at the end of the 5 sec it would be descending at

                                 (2 m/s  +  49 m/s)  =  51 m/s .
You might be interested in
Why do yall not hate us country people?
sveticcg [70]

Answer:

Because we don't?

Explanation:

4 0
3 years ago
What are two things that the amount of gravitational force between two object depends on
Amiraneli [1.4K]
1).  the product of the two masses being gravitationally attracted to each other

2).  the distance between their centers of mass

And that's IT.  The gravitational force between them depends on
only those two things, nothing else.
3 0
3 years ago
Read 2 more answers
M84, M87, and NGC 4258 all have accretion disks around their central black holes for which the rotational velocities have been m
givi [52]

Answer:

<u>For M84:</u>

M = 590.7 * 10³⁶ kg

<u>For M87:</u>

M = 2307.46 * 10³⁶ kg

Explanation:

1 parsec, pc  = 3.08 * 10¹⁶ m

The equation of the orbit speed can be used to calculate the doppler velocity:

v = \sqrt{\frac{GM}{r} }

making m the subject of the formula in the equation above to calculate the mass of the black hole:

M = \frac{v^{2} r}{G}.............(1)

<u>For M84:</u>

r = 8 pc = 8 * 3.08 * 10¹⁶

r = 24.64 * 10¹⁶ m

v = 400 km/s = 4 * 10⁵ m/s

G = 6.674 * 10⁻¹¹ m³/kgs²

Substituting these values into equation (1)

M = \frac{( 4*10^{5}) ^{2} *24.64* 10^{16} }{6.674 * 10^{-11} }

M = 590.7 * 10³⁶ kg

<u>For M87:</u>

r = 20 pc = 20 * 3.08 * 10¹⁶

r = 61.6* 10¹⁶ m

v = 500 km/s = 5 * 10⁵ m/s

G = 6.674 * 10⁻¹¹ m³/kgs²

Substituting these values into equation (1)

M = \frac{( 5*10^{5}) ^{2} *61.6* 10^{16} }{6.674 * 10^{-11} }

M = 2307.46 * 10³⁶ kg

The mass of the black hole in the galaxies is measured using the doppler shift.

The assumption made is that the intrinsic velocity dispersion is needed to match the line widths that are observed.

3 0
3 years ago
Which of the following BEST describes what a thermometer measures
asambeis [7]

A theromometer is the increase or decrease of earths atmospheric temperture, thats how you would measure the temperture of the air around you.

7 0
3 years ago
12
Harrizon [31]

Answer:

B. 6

Explanation:

i think... im in 7th grade and haven't really leaned this but im like 60% sure but i migjt be wrong

7 0
3 years ago
Read 2 more answers
Other questions:
  • For a particular reaction, Δ H ∘ = − 93.8 kJ and Δ S ∘ = − 156.1 J/K. Assuming these values change very little with temperature,
    15·1 answer
  • A super ball stops bouncing because A) gravity never lets it bounce. B) it loses energy due to friction. C) it cannot gain poten
    6·1 answer
  • Which factors has the largest influence on the formation and direction of the asiatic monsoons?
    15·1 answer
  • sugar solution does not change the colour of green universal indicator what does this tell you about sugar solution
    15·1 answer
  • When the actual location of a rock on a riverbed is different from where an observer on dry land sees it, the principle of _____
    13·1 answer
  • A 1.2-kg mass is projected from ground level with a velocity of 31.3 m/s at some unknown angle above the horizontal. A short tim
    7·1 answer
  • For the common-emitter, common-base and emitter-follower amplifier designs,what is the primary benefit of each amplifier?
    13·1 answer
  • Why is “soft” iron used for the core of an electromagnet?
    12·1 answer
  • How is the gravitational force acting on a falling object calculated
    13·1 answer
  • Using a refracting telescope, you observe the planet Mars when it is 1.99×1011 m from Earth. The diameter of the telescope's obj
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!