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
Troyanec [42]
3 years ago
5

A horse ran at a constant speed for 4 hours. Then, it decreased its speed by 7 mph for the

Physics
1 answer:
algol133 years ago
6 0

Distance travelled in 4 hours...

730 - 442 = 288 miles

Speed for the 4 hours;

Speed = 288/4 = 72 miles/hour

Speed for the rest of 442 miles...;

(72 - 7) = 65 miles/hour

Time taken for 442 miles..

Time taken = Distance/Speed

; 442/65 = 6.8

Time taken = 6.8 hours

You might be interested in
In some areas, farmers have installed windmills to generate electricity to run the farm. Some are generating a surplus of electr
Natalija [7]
The statement that best describes how the windmill technology benefits the environment is this: WINDMILLS DO NOT POLLUTE THE ENVIRONMENT.
Constructing a windmill involves harnessing the power of the wind to generate electricity. This type of electricity generation has no side  effects whatsoever. It is environmental friendly and does not pollute the environment. 
6 0
3 years ago
At what speed relative to the ship does she recoil toward the spaceship?
Andre45 [30]
She recoil at a high speed than a low
7 0
3 years ago
An archer shoots an arrow at a 75.0 m distant target; the bull’s-eye of the target is at same height as the release height of th
jeyben [28]

Answer:

the shooting angle ia 18.4º

Explanation:

For resolution of this exercise we use projectile launch expressions, let's see the scope

      R = Vo² sin (2θ) / g

      sin 2θ = g R / Vo²

      sin 2θ = 9.8 75/35²

      2θ = sin⁻¹ (0.6)

      θ = 18.4º

To know how for the arrow the tree branch we calculate the height of the arrow at this point

       X2 = 75/2 = 37.5 m

We calculate the time to reach this point since the speed is constant on the X axis

       X = Vox t

       t2 = X2 / Vox = X2 / (Vo cosθ)

        t2 = 37.5 / (35 cos 18.4)

        t2 = 1.13 s

With this time we calculate the height at this point

        Y = Voy t - ½ g t²

        Y = 35 sin 18.4   1.13 - ½ 9.8 1,13²

        Y = 6.23 m

With the height of the branch is 3.5 m and the arrow passes to 6.23, it passes over the branch

8 0
3 years ago
Read 2 more answers
This is a voice recording of the text of a book that you listen rather than read.​
OleMash [197]
Romeo and Juliet is one
8 0
3 years ago
A car of mass 600kg is moving at 15m/s. The driver accelerate gently to a final velocity of 30m/s so that a force of force acts
Anvisha [2.4K]

Answer:

Really hope you get it!!

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the average velocity of a person walking to the store as
    5·2 answers
  • How can you see a unicellular organsim
    12·1 answer
  • How coal power plants produce electrical energy to power our homes
    5·1 answer
  • A hockey puck sliding on the ice has ______.
    14·2 answers
  • What would be the weight of a 59.1-kg astronaut on a planet with the same density as Earth and having twice Earth's radius?
    14·1 answer
  • You are given $1000.00 but you must spend 1/2 the first year, and 1/2 the balance for each year thereafter. If you spend the max
    12·1 answer
  • A person hears the echo of his own voice from a distant hill after 2 seconds. How far away is the person from the hill, if the s
    14·1 answer
  • 4)
    8·2 answers
  • Un automóvil que va a 36Km/h acelera durante 8segundos hasta llegar a una velocidad de 108 Km/h y luego frena hasta detenerse en
    9·1 answer
  • Which line represents travel at the fastest speed?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!