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
Lady_Fox [76]
3 years ago
7

A soccer ball is kicked horizontally off a 24.0 meter high hill and lands a distance of 33.0 meters from the edge of the hill. D

etermine the initial horizontal velocity of the soccer ball.
Physics
2 answers:
ryzh [129]3 years ago
8 0

Answer:

Question:

A soccer ball is kicked horizontally off a  

22.0

meter high hill and lands a distance of  

35.0

meters from the edge of the hill. Determine the initial horizontal velocity of the soccer ball.

Projectile:

The projectile motion is a combination of uniform motion and uniform acceleration motion. When an object is thrown with a velocity (v) then, the horizontal component of the velocity (

v

h

) does not change with respect to time and therefore, the following relation holds valid for the horizontal motion:

S

p

e

e

d

=

S

p

e

e

d

T

i

m

e

The vertical component of the velocity (

v

v

) changes at the rate of  

g

=

9.81

 

m

/

s

2

and therefore, the equations of motion are used to study the vertical motion of the object. These equations are customized for the vertical motion as:

v

=

u

+

g

t

s

=

u

t

+

0.5

g

t

2

v

2

−

u

2

=

2

g

s

For an object thrown with a horizontal velocity, the initial vertical component of the velocity will be zero. In that case, the vertical distance traveled by the object in time (t) will be,

s

=

0.5

g

t

2

⇒

t

=

√

2

s

g

Answer and Explanation:

Given:

Height of the hill,  

H

=

22

 

m

The horizontal distance covered by the ball before it lands,  

d

=

35

 

m

Calculating the time taken by the ball to hit the ground,

t

=

√

2

H

g

=

√

2

(

22

)

9.81

=

2.12

 

s

Calculating the initial horizontal velocity of the ball,

V

=

d

t

=

35

2.12

=

16.51

 

m

/

s

which is the answer.

Explanation:

vekshin13 years ago
6 0

Answer:

ten minutes fakfdxjjnox

You might be interested in
A point charge of 5.0 x 10^-7 C moves to the right at 2.6 x 10^5 m/s in a magnetic field that is directed into the screen and ha
-BARSIC- [3]

The magnitude of the magnetic force acting on the charge is 2.34×10⁻³ N.

<h3>What is magnetic force?</h3>

A magnetic force is the force that act in a magnetic field.

To calculate the magnetic force, we use the formula below.

Formula:

  • F = qvB.........Equation 1

Where:

  • F = magnetic force
  • q = point charge
  • v = Velocity of the the charge
  • B = Field strength

From the question,

Given:

  • q = 5.0×10⁻⁷ C
  • v = 2.6×10⁵ m/s
  • B = 1.8×10⁻² T

Substitute these values into equation 2

  • F = (5.0×10⁻⁷)(2.6×10⁵)(1.8×10⁻²)
  • F = 23.4×10⁻⁴
  • F = 2.34×10⁻³ N

Hence, the magnitude of the magnetic force acting on the charge is 2.34×10⁻³ N.

Learn more about magnetic force here: brainly.com/question/2279150

#SPJ12

5 0
2 years ago
I NEED THIS FAST
Novay_Z [31]
I think it is b , that what I would i pick
7 0
3 years ago
Which device is designed to convert chemical energy into kinetic energy ?
irakobra [83]

Answer:

A.C. Generator

Explanation:

The device designed to convert chemical energy into kinetic energy is an A.C generator.

The generator uses fuel to cause the mechanical motion of the pistons in the device.

  • Chemical energy is a form of energy found between the bonds of compounds and molecules.
  • When the bonds are broken, energy is released.
  • The heat energy produced drives pistons and cause mechanical motion of the body.
  • This is a form of kinetic energy which causes the motion of a body.
7 0
2 years ago
if a cyclist is travelling a road due east at 12km/h and a wind is blowing from south-west at 5km/h. find the velocity of the wi
slamgirl [31]

Answer:

The velocity of wind with respect to cyclist is -15.5 \widehat{i} - 3.5 \widehat{j}.

Explanation:

speed of cyclist = 12 km/h east

speed of wind = 5 km/h south west

Write the speeds in the vector form

\overrightarrow{vc} = 12 \widehat{i}\\\\overrightarrow{vw} = - 5 (cos 45 \widehat{i} + sin 45 \widehat{j})\\\\\overrightarrow{vw} =-3.5 \widehat{i} - 3.5 \widehat{j}

The velocity of wind with respect to cyclist is

\overrightarrow{vw} =-3.5 \widehat{i} - 3.5 \widehat{j}\overrightarrow{v_(w/c)} = \overrightarrow{vw}-\overrightarrow{vc}\\\\\overrightarrow{v_(w/c)} = - 3.5 \widehat{i} - 3.5 \widehat{j}  - 12 \widehat{i}\\\\\overrightarrow{v_(w/c)} =-15.5 \widehat{i} - 3.5 \widehat{j}

7 0
2 years ago
You attach a meter stick to an oak tree, such that the top of the meter stick is 1.87 meters above the ground. Later, an acorn f
Alborosie

Answer:

3.25 m

Explanation:

t = Time taken = 0.166 seconds

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration = 9.81 m/s²

s = 1 because meter stick is 1 meter in length

s=ut+\frac{1}{2}at^2\\\Rightarrow u=\frac{s-\frac{1}{2}at^2}{t}\\\Rightarrow u=\frac{1-\frac{1}{2}\times 9.81\times 0.166^2}{0.166}\\\Rightarrow u=5.21\ m/s

Here, the initial velocity of point B is calculated from the time which is given. This velocity will be the final velocity of the acorn which falling from point A.

v^2-u^2=2as\\\Rightarrow s=\frac{v^2-u^2}{2a}\\\Rightarrow s=\frac{5.21^2-0^2}{2\times 9.81}\\\Rightarrow s=1.38\ m

The distance of the acorn from the ground is 1.87+1.38 = 3.25 m

4 0
2 years ago
Other questions:
  • A harmonic wave on a string with a mass per unit length of 0.050 kg/m and a tension of 60 N has an amplitude of 5.0 cm. Each sec
    5·1 answer
  • The inner planets—mercury, venus, earth, and mars—are believed to have been formed by _____. answers
    11·2 answers
  • A reaction where one element takes the place of another element in a compound is an example of which type of reaction?
    6·1 answer
  • 25 POINTS FOR CORRECT ANSWER
    7·2 answers
  • Which of the following is true of an adiabatic process?
    15·2 answers
  • Two airplanes leave an airport at the same time. The velocity of the first airplane is 730 m/h at a heading of 65.3 ◦ . The velo
    12·1 answer
  • How far will a 600 kg boat travel in 10 s if there is a constant 900 N force on it and it starts from rest?
    11·1 answer
  • Isabella is learning the parts of the cell and knows they require a structure to regulate the transfer of materials in and out.
    9·1 answer
  • A child is bored in the back of the car and starts to time how long the car takes to pass some 100m markers on the side of the r
    12·1 answer
  • What is the work done by the friction when the body slides against a rough horizontal surfaces?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!