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
daser333 [38]
1 year ago
7

A coin is dropped from a balcony 52.8m / h * i * g * h . How long does it take the coin to land in the fountain below ?

Physics
2 answers:
svet-max [94.6K]1 year ago
6 0
Prouble and the rest of us have to do it because we
Crazy boy [7]1 year ago
4 0

Given data:

* The height of the balcony is 52.8 m.

* The initial velocity of the coin is zero.

Solution:

By the kinematics equation, the time taken by the coin to land on the fountain is,

H=ut+\frac{1}{2}gt^2

where H is the height, g is the acceleration due to gravity, u is the initial velocity, and t is the time taken,

Substituting the known values,

undefined

You might be interested in
a dog walks 14 meters to the east and than 20 meters back to the west for the motion what is the distance moved
Mariana [72]
The dog moved 6 meters west and 34 meters total
8 0
3 years ago
Read 2 more answers
A train of mass 320000 kg accelerate uniformly from rest. It takes 57 s to travel a distance of 810 m in a straight line. Find t
Nastasia [14]

Answer:

160,000 N

Explanation:

Given:

m = 320,000 kg

v₀ = 0 m/s

a = constant

t = 57 s

Δx = 810 m

Find: Fnet

Apply Newton's second law:

∑F = ma

Fnet = ma

To find Fnet, we must first find the acceleration.

x = x₀ + v₀ t + ½ at²

810 m = 0 m + (0 m/s) (57 s) + ½ a (57 s)²

a = 0.50 m/s²

Fnet = (320,000 kg) (0.50 m/s²)

Fnet = 160,000 N

8 0
4 years ago
A body with mass of 200 g is attached to the end of a spring that is stretched 20 cm by a force of 9 N. At time tequals0 the bod
11Alexandr11 [23.1K]

Answer:

X(t) = 13/13 cos(12t+α)

C =13/13

π/6 s

Explanation:

(A) A body with mass 200 g is attached to the end of a spring that is stretched 20 cm by a force of 9 N. At time t = 0 the body is pulled 1 m in to the right, stretching the spring, 3 set in motion with an initial velocity of 5 m/s to the left.  

(a) Find X(t) in the form c • cos(w_o*t— α)  

(b) Find the amplitude 3 Period of motion of the body 1  

mass: m = 200g =  0.200 kg  

displacement: ΔX = 20 cm =  0.20 m

Spring Constant: K =  9/0.20 = 45 N/m

IV:   X(0) = 1m V(0) = -5 m/s

Simple Harmonic Motion: c•cos(cosw_t— α) = X(t)  

Circular Frequency: w_o = √k/m= √36/(0.20) = 13 rad/s

X(0) = 1m =c_1

X'(0) = V(0) = c_2*w_o/w_o

        = -5/12 =   c_2

"radians Technically Unitless"  

Amplitude: c = √ci^2 + c^2 ==> √1^2 + (-5/12)^2 = 1 m =13/13 = c

X(t) = 13/13 cos(12t+α)

since, C>0 : damped forced vibration c_1>0, c_2>0

phase angle 2π+tan^-1(c_2/c_1)

                        =2π+tan^-1(-5/12/1)= 5.884

period: T =2π/w_o

                =π/6 s

6 0
4 years ago
One indication that a planet may exist near a distant star is that ...
Bingel [31]
Shadows blocking part of the light from the star.

A quick warning though this only works on planets either close to the star or planets that are very large. 

Also to ensure that the shadows are planets the shadows have to move or orbit around the star. IE The shadow moves
4 0
3 years ago
Which of these objects has kinetic energy?
Damm [24]

Answer:

A ball moving through the air.

Explanation:

The ball has momentum which is a form of kinetic energy.

I don't know if that is correct, but I hope it helps!!!!

3 0
3 years ago
Read 2 more answers
Other questions:
  • What are data and observation that have been collected through scientific process called
    5·1 answer
  • To get to the net, a soccer ball must travel 35 m [S 40° W]. If one player kicks it 25 m [E], what displacement must be achieved
    8·1 answer
  • The sun is 30 degrees above the horizon. it makes a 51 m long shadow of a tall tree. part a how high is the tree?
    11·2 answers
  • For the parallel plates mentioned above, the DC power supply is set to 24 Volts and the plate on the right is at x = 12 cm. What
    14·1 answer
  • This is a physical process which takes place when rocks are broken down without any change in their chemical nature. the rocks a
    10·2 answers
  • Demonstrate how you can derive our 9.8m/s^2 from Newton's general law of gravity.
    10·1 answer
  • A) About 9.1<br> B) about 14.1<br> C) about 17.2<br> D) about 18.1 <br><br> Please help me
    10·1 answer
  • What is the direction of the current flowing through the
    5·1 answer
  • If Mars had the same amount of mass as Earth, would it have more moons, less moons, or the same amount of moons as it has now?
    11·1 answer
  • Tectonic plate movement is the reason why northern California has a very different landscape than southern California. Two diffe
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!