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
Daniel [21]
2 years ago
6

A baseball is dropped off the side of a cliff. It free-falls to the ground in 8 seconds. During the third second, the ball is tr

aveling about ___ m/s.
Physics
2 answers:
Anna [14]2 years ago
6 0

when an object drops it accelerates at 9.8 mps so at 3 seconds the equation would be 9.8x3 which equals 29.4

kozerog [31]2 years ago
3 0
The acceleration of gravity is 9.8 m/s² .  That means that a falling object
is always falling 9.8 m/s faster than it was falling 1 second earlier.

If an object is not slowed by air resistance, and has far enough to go
so that it's still falling after three whole seconds, then at the end of
three seconds it's falling at

           (9.8 m/s²) x (3 sec)  =  29.4 m/s
You might be interested in
How do I eat an apple?<br> I'm having trouble eating an apple.
mafiozo [28]

Answer:

You bite it then you chew the piece you bit off. :)

Explanation:

5 0
3 years ago
Read 2 more answers
When an object is electrically polarized
marta [7]

Answer:

One side is more positive, the other is more negative

Explanation:

When an atom is electrically polarized, it means that one side has more electrons than the other. This makes one side more negative as it has more electrons than the other. I hope this helps!

5 0
3 years ago
The equation of a transverse wave traveling along a string is 1 1 y (2.00 mm)sin[(20 m )x (600 s )t] − − = − Find the (a) amplit
Lelu [443]

Answer:

a)Amplitude ,A = 2 mm

b)f=95.49 Hz

c)V=  30 m/s  ( + x direction )

d)  λ = 0.31 m

e)Umax= 1.2 m/s

Explanation:

Given that

y=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

As we know that standard form of wave equation given as

y=A sin(\phi -\omega t)

A= Amplitude

ω=Frequency (rad /s)

t=Time

Φ = Phase difference

y=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

So from above equation we can say that

Amplitude ,A = 2 mm

Frequency ,ω= 600 rad/s                     (2πf=ω)

ω= 2πf

f= ω /2π

f= 300/π = 95.49 Hz

K= 20 rad/m

So velocity,V

V= ω /K

V= 600 /20 = 30 m/s  ( + x direction )

V = f λ

30 = 95.49 x  λ

 λ = 0.31 m

We know that speed is the rate of displacement

U=\dfrac{dy}{dt}

U=2\ mm\ sin[(20m^{-1})x-(600s^{-1})t]

U=1200\ cos[(20m^{-1})x-(600s^{-1})t]\ mm/s

The maximum velocity

Umax = 1200 mm/s

Umax= 1.2 m/s

8 0
3 years ago
What is the fate of solar radiation that reaches the earth?
expeople1 [14]
When solar radiation reaches the Earth it quickly dissipates as most of the radiation and UV rays are blocked by ozone layer, but more radiation and UV rays are able to get through because of global warming.
6 0
3 years ago
How does a bicycles kinetic energy change when it slows down?
-Dominant- [34]
The kinetic energy decreases 
7 0
3 years ago
Other questions:
  • Professor Frank Nabarro insists that all senior physics majors take his notorious physics aptitude test. The test is so tough th
    5·1 answer
  • Let’s consider several models of the Earth’s radiation properties. In each part, assume that the Earth's radiative output balanc
    5·1 answer
  • Which is best supported by the data in the chart? Current W flows at a higher rate than Current Z. Current Y flows at a lower ra
    9·2 answers
  • A 3-cm high object is in front of a thin lens. The object distance is 4 cm and the image distance is –8 cm. (a) What is the foca
    7·1 answer
  • The force exerted on a bridge pier in a river is to be tested in a 1:10 scale model using water as the working fluid. In the pro
    14·1 answer
  • The gazelle travels 2 km in a half hour.The gazelle's average speed is:
    9·1 answer
  • Hey hi can someone help? ​
    5·2 answers
  • 0.000236 kg has how many<br> significant figures?
    10·1 answer
  • 18°C = _____ <br> A -255 K<br> B- 0 K<br> C- 18 K<br> D- 291 K
    8·1 answer
  • According to one of the laws of thermodynamics, energy cannot be what?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!