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
alukav5142 [94]
3 years ago
13

Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from t

he horizontal, and that the projectile is launched from the origin over a horizontal surface An ideal projectile is launched from level ground at a launch angle of 26° and an initial speed of 48 m/sec. How far away from the launch point does the projectile hit the ground
Physics
1 answer:
kirill115 [55]3 years ago
3 0

Answer:

d = 185.26 meters

Explanation:

It is given that,

Launching angle of the projectile, \theta=26^{\circ}

Initial speed of the projectile, u = 48 m/s

Let at distance d the projectile hits the ground from the launch point. It is equal to range of the projectile. Its formula is given by :

d=\dfrac{u^2\ sin2\theta}{g}

Substituting all the values in above formula. So, we get :

d=\dfrac{(48)^2\ sin2(26)}{9.8}

d = 185.26 meters

So, the distance between the launch point and the point where it hits is 185.26 meters. Hence, this is the required solution.

You might be interested in
A physics teacher performing an outdoor demonstration suddenly falls from rest off a high cliff and simultaneously shouts "Help"
Digiron [165]

Answer: a) The cliff is 532.05m high

b) Her speed just before hitting the ground is 102.12 m/s

Explanation: To solve This, I'll use a sketch diagram, attached to this solution,

In 3seconds, the teacher heard the echo of her initial scream back. We can obtain the distance the teacher had fallen at the end of 3 seconds using the equations of motion,

Y1 = ut + 0.5g(t^2)

Since she's falling under the influence of gravity, her initial velocity, u = 0m/s, g = 9.8m/s2, t = 3s

Y1, distance she fell through in 3 seconds = 0.5×9.8(3^2) = 44.1m

Let the total height of the cliff be (44.1 + x); where is the remaining height of cliff that the teacher will fall through.

Using the equations of motion again, we can obtain distance travelled by the sound waves in 3s. sound waves travel with a constant speed of 340m/s, no acceleration,

Y2 = ut + 0.5g(t^2) where g = 0, u = 340m/s, t = 3seconds

Y2 = 340 × 3 = 1020m

But in 3 secs, the sound waves would have travelled through the total height of the cliff (44.1 + x) and back to the teacher's current height, x. That is, 1020 = 44.1 + x + x

x = 487.95m

So, total height of cliff = 44.1 + 487.95 = 532.05m

b) the speed of the teacher just before she hits the ground.

Using the equations of motion again,

(V^2) = (U^2) + 2gs

Where v is the final velocity to be calculated

U is the initial velocity = 0m/s

g is acceleration due to gravity = 9.8m/s2

S is the total height she fell through, that is, the height of the cliff = 532.05m

(V^2) = 0 + 2×9.8×532.05 = 10428.18

V = √(10428.18) = 102.12m/s

QED!

4 0
3 years ago
A police officer uses a radar gun to determine the speed of a car. A specialized radar gun uses ultraviolet light to determine t
Virty [35]

Answer:

A transverse and D electromagnetic

on edg2020

Explanation:

I got it right on the test

good luck

5 0
3 years ago
Read 2 more answers
A periodic wave has a wavelength of 0,50 m and a speed of 20 m/s, What is the wave frequency?
faltersainse [42]

Answer:

u=speed, w=wavelenght, f=frequency

It's known that u=w*f =>  f=u/w

                                       u=20m/s     ==>  f=20/0,5  => f=40 Hz

                                       w=0,50m

Explanation:

6 0
1 year ago
A child on a swing sweeps out a distance of 45 ft on the first pass. If she is allowed to continue swinging until she​ stops, an
earnstyle [38]

Answer:

d = 90 ft

Explanation:

Here in each swing the distance sweeps by the swing is half of the initial distance that it will move

So here we can say that total distance in whole motion is  given as

d = 45 + \frac{45}{2} + \frac{45}{4} + \frac{45}{8}..........

since it is half of the distance that it will move in each swing so it would be a geometric progression with common ratio of 1/2

so sum of such GP is given by the formula

S = \frac{a}{1 - r}

d = \frac{45}{1 - \frac{1}{2}}

d = 90 ft

6 0
3 years ago
Which kind of air front forms when a warm air mass meets the area of a cooler air mass?
mihalych1998 [28]
<span>Answer:  "a cold front" .
_________________________________</span>
8 0
3 years ago
Other questions:
  • Molecules are composed of atoms held together through
    12·2 answers
  • The velocity selector in in a mass spectrometer consists of a uniform magnetic field oriented at 90 degrees to a uniform electri
    5·1 answer
  • You are driving your small, fuel-efficient car when you have a head-on collision with a big, fuel-efficient truck that is three
    15·1 answer
  • 5 Ohm 3 Ohm 2 Ohm R=?​
    6·1 answer
  • Secondary evidence is the basis for drawing scientific conclusions. <br> a. True<br> b. False
    15·2 answers
  • Which is most likey to contain brackish water?
    12·2 answers
  • If the velocity of an object changed from 30 m/s to 60 m/s over a period of 10 seconds what would the average acceleration be ?
    14·1 answer
  • What type of stimulus do we tend to be particularly aware of ?
    10·1 answer
  • What property of light is suggested by the formation of shadows​
    14·1 answer
  • The gravitational force, Fbetween an object and the Earth is inversely proportional to the square of the distance from the objec
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!