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
lord [1]
3 years ago
5

a hammer drops from a height of 8 meters. calculate the speed with which it hits the ground. show work

Physics
1 answer:
ioda3 years ago
3 0

Answer:

12.5 m/s

Explanation:

The motion of the hammer is a free fall motion, so a uniformly accelerated motion, therefore we can use the following suvat equation:

v^2-u^2=2as

Where, taking downward as positive direction, we have:

s = 8 m is the displacement of the hammer

u = 0 is the initial velocity (it is dropped from rest)

v is the final velocity

a=g=9.8 m/s^2 is the acceleration of gravity

Solving the equation for v, we find the final velocity:

v=\sqrt{u^2+2as}=\sqrt{0+2(9.8)(8)}=12.5 m/s

So, the final speed is 12.5 m/s.

You might be interested in
Which pair of factors affects the force of gravity between objects?
butalik [34]

Answer:

mass and distance

Explanation:

dont need to summary this

5 0
3 years ago
Why do the star constellations seem to move across the sky
barxatty [35]

Answer: These apparent star tracks are in fact not due to the stars moving, but to the rotational motion of the Earth. As the Earth rotates with an axis that is pointed in the direction of the North Star, stars appear to move from east to west in the sky.

Explanation: why do the star constellations seem to move across the sky

5 0
3 years ago
Read 2 more answers
A 90-meter train travels at a constant speed of 10 meters per second. How long will it take to cross a 0.06 bridge?
salantis [7]

Answer:

The time taken for the train to cross the bridge is 9.01 s

Explanation:

Given;

length of the train, L₁ = 90 m

length of the bridge, L₂ = 0.06 m

speed of the train, v = 10 m/s

Total distance to be traveled, = L₁ + L₂

                                                  = 90 m + 0.06 m

                                                   = 90.06 m

Time of motion = Distance / speed

Time of motion = 90.06 / 10

Time of motion = 9.006 s ≅ 9.01 s

Therefore, the time taken for the train to cross the bridge is 9.01 s

5 0
3 years ago
All the following statements are true. Which one is most important in explaining the tremendous tidal heating that occurs on Io?
SVEN [57.7K]

Answer:

  • <u>Option:(D)-</u>

<em>"Io orbits Jupiter on an elliptical orbit, due to orbital resonances with other satellites."</em>

Explanation:

  • <u>"Io" moon of Jupiter:</u>

The Io is one of the four moons of Jupiter, as it rotates around the planet in an elliptical orbit, due to orbital resonance with other satellites. As due to the rotational motion of the moon, while orbiting the planet and having a large amount of gravitational pull on them there is a net amount of heat between the two heavenly bodies in the solar system. As the moon is very small in size as compared to giant celestial body, the crust of the moon is distorted by the unequal force of the gravity on each of its side by the planet causing a distortion of the moon's over all shape.

4 0
3 years ago
Economic importance of plant resources​
Katena32 [7]

Answer:

People depend upon plants to satisfy such basic human needs as food, clothing, shelter, and health care. These needs are growing rapidly because of a growing world population, increasing incomes, and urbanization . Plants provide food directly, of course, and also feed livestock that is then consumed itself.

3 0
2 years ago
Read 2 more answers
Other questions:
  • In a stadium, fans stand up and sit down to produce a wave across the stadium. This type of wave where the material travels perp
    5·2 answers
  • A 9cm diameter spherical ball whose surface is maintained at a temperature of 110c is
    13·1 answer
  • Sandra is having difficulty with her reading assignment because she does not fully understand the language. Which online tool wo
    10·2 answers
  • An open-delta three-phase transformer system has one transformer center-tapped to provide a neutral for single-phase voltages. I
    13·1 answer
  • Alternating current is normally produced by a
    8·1 answer
  • Two spheres have the same radius and equal mass. One sphere is solid, and the other is hollow and made of a denser material. Whi
    10·1 answer
  • HELPPPP if this object is accelerating to the right at 2.5 m/s2, arrow C
    6·1 answer
  • A researcher changes the DNA in a soybean plant so that it produces offspring with a resistance to weed killer. Which best descr
    11·2 answers
  • You put a diode in a microelectronic circuit to protect the system in case an untrained person installs the battery backward. In
    7·1 answer
  • There is a distance of 2m between the centers of two identical spheres, each with a mass of 25 kg. What is the magnitude and the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!