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
sineoko [7]
3 years ago
5

A kicker kicks a ball off the ground at 29.5 mi/hr and at 42.5 degrees.

Physics
1 answer:
deff fn [24]3 years ago
4 0

Answer:

20.3m

Explanation:

the formula used was

s=(u^2sin^2∆)÷2g

You might be interested in
A roller coaster cart of mass m = 223 kg starts stationary at point A, where h1 = 26.8 m and a while later is at B, were h2 = 14
Tresset [83]

Answer:

vB = 15.4 m/s

Explanation:

Principle of conservation of energy:

Because there is no friction the mechanical energy is conserve

ΔE = 0

ΔE : mechanical energy change (J)

K : Kinetic energy (J)

U: Potential energy (J)

K = (1/2)mv²

U = m*g*h

Where :

m: mass (kg)

v : speed (m/s)

h : hight (m)

Ef - Ei = 0

(K+U)final - (K+U)initial =0

(K+U)final = (K+U)initial

((1/2)mv²+m*g*h)final = ((1/2)mv²+m*g*h)initial , We divided by m both sides of the equation:

((1/2)vB² + g*hB = (1/2 )vA²+ g*hA

(1/2) (vB)² + (9.8)*(14.7) =  0 + (9.8)(26.8 )

(1/2) (vB)² = (9.8)(26.8 ) - (9.8)*(14.7)

(vB)² = (2)(9.8)(26.8 - 14.7)

(vB)² = 237.16

v_{B} = \sqrt{237.16}

vB = 15.4 m/s : speed of the cart at B

4 0
3 years ago
Which phrase best describes sir isaac newton's contributions to modern science and therefore to the industrial revolution?
astraxan [27]
Can you please give the phrases? 

But, I'll help what I can.

First, he was the first to discover gravity. He was not bonked by the head by an apple, rather he watched an apple fall from a tree before he decided to explore gravity further. 

He was also the first scientist to be knighted, which is a great honor, as you can expect. 

Newton also developed The Three Laws of Motion. They are extremely important to physics and are considered some of the foundation for physics today. 

He also discovered calculus, which is complex math that is very helpful to scientists today. 

He also discovered the color spectrum using a glass prism, a dark room and window shade with a hole in it. He was able to project the color spectrum onto a piece of paper.

Those are the few I can think of now, but hope it helps!


7 0
3 years ago
PLEASE HELP ME
pogonyaev

Answer:

The answer is Insulator, Conductor

Explanation:

A/An Insulator is a material in which charges will not move easily, whereas a/an Conductor is a material that allows charges to move about easily

5 0
2 years ago
What is the pressure at the bottom of a tank 1-m deep? Take the density of water to be 1000-kg/m^3, and gravitational accelerati
lara31 [8.8K]

To solve this problem we will use the concepts related to hydrostatic pressure. Which determines the pressure of a body at a given depth of a liquid.

Mathematically this can be described as

P= \rho gh

Here

\rho = Density

g = Gravity

h = Height (Depth)

If we replace the values given in the equation we will have to

P = 1000 (9.8)(1)

P = 9800 Pa

Therefore the pressure at the bottom will be 9.8kPa

4 0
3 years ago
Which of the following best describes the upper respiratory tract?
In-s [12.5K]
A). It takes air in from outside the body.
3 0
2 years ago
Other questions:
  • to what height will a 250g soccer ball rise to if it is kicked directly upwards at 8 meters per second​
    6·2 answers
  • A packing crate rests on a horizontal surface. It is acted on by three horizontal forces: 600 N to the left, 200 N to the right,
    6·1 answer
  • Which theory proposed by Galileo is considered a “big mistake of his life”? What did the theory state, and why was it a “big mis
    5·2 answers
  • If the vertical component of velocity for a projectile is 7.3 meters/second, what is its hang time?
    11·1 answer
  • How do scientists look for black holes in the sky
    5·2 answers
  • A large stick is pivoted about one end and allowed to swing back and forth with no friction as a physical pendulum. The mass of
    6·1 answer
  • What properties of radio waves makes them suitable for sending signals in mountainous regions?
    6·1 answer
  • Un objeto de 200 gramos está amarrado del extremo de una cuerda y gira describiendo un círculo horizontal de 1.20 m de radio a r
    6·1 answer
  • Ejercicio 1: Un cuerpo gira en un círculo de 8cm de diámetro con una rapidez constante
    6·1 answer
  • This graph shows the energy of a reaction over time. Which statement is
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!