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
hammer [34]
3 years ago
13

A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the

other hits ship B, which is farther away. The two shells are fired at the same speed. Assume that air resistance is negligible and that the magnitude of the acceleration due to gravity is g. Note that after Part B the question setup changes slightly. * What shape is the trajectory (graph of y vs. x) of the shells?
a.straight line
b.parabola
c.hyperbola
d. The shape cannot be determined.
Physics
1 answer:
snow_tiger [21]3 years ago
4 0

Answer:

b.parabola

Explanation:

Lets take speed of shells = u

When they strike the enemy ships then the path followed by shells given as'

y=xtan\theta -\dfrac{gx^2}{2u^2cos^2\theta}

x =Horizontal distance cover by shell before striking the enemy ship

y=Vertical distance cover by shell before striking the enemy ship

θ=Angle make by initial velocity(u) from horizontal

y=xtan\theta -\dfrac{gx^2}{2u^2cos^2\theta}

Here the power of x is 2 that is why it is the equation of parabola.

Answer is b.

b.parabola

You might be interested in
There is a vector A with magnitude 5 units pointing toward west, and a
Anit [1.1K]
Using the Pythagorean’s theorem to find the resultant, we find 5’2 +3’2=x’2
X=square root of 34=5.8unitd
4 0
3 years ago
If a wave has a wavelength of 4m and a frequency of 2.5hz what is the velocity of the wave
poizon [28]

Answer:

10 m/s

Explanation:

Velocity = frequency * wavelength

Velocity = 2.5 * 4

Velocity = 10 m/s

3 0
3 years ago
Is a vector necessarily changed if it is rotated through an angle ?​Explain
gavmur [86]
Yes, since it depends on the normal and resultant
6 0
4 years ago
a 550 kg car accelerates from 15 m/s to 25 m/s in 15 s by applying a constant force. how large of a force is exerted? Please sho
Novay_Z [31]
You'll be using the equation f = m a, or force = mass x acceleration

First, you have to find the acceleration. The acceleration needed is the average acceleration over the 15 seconds is accelerated. So, you take the change in speed (25m/s - 15m/s) to get a change of 10m/s. 
The average acceleration (acceleration per second) is found by dividing total acceleration by the time it took. So, it's 10 / 15, which equals .6. This is a, your acceleration
Now just plug it into the equation F = m a, because it already gives you the mass of the car
F = 550 x .6
Solve that to get F = 366.6. F is measured in Newtons (N), so your answer is 366.6N
3 0
3 years ago
An object travels at constant velocity of 3 m/s for a time period of 7.15 s. What is its displacement over this time?
son4ous [18]

Hi there!

We can use the following equation for constant velocity:

\large\boxed{d = vt}

d = displacement (m)

v = velocity (m/s)

t = time (s)

Plug in the givens:

d = 3 * 7.15 = \boxed{21.45 m}

5 0
3 years ago
Other questions:
  • Длина лодки=6 метров человек, масса которого в 2 раза меньше массы лодки переходит с носа на карму определить, на какое расстоян
    13·1 answer
  • An ambulance travels down a high way at a speed of 75.0 mi/h, its siren emitting sound at a frequency of 400 Hz. What frequency
    12·1 answer
  • What physical property of minerals describes how they will break along a plane of weakness in a crystal lattice?
    11·1 answer
  • Please help!!! Essay question.....<br><br> Which properties of light define light as a wave?
    6·2 answers
  • Which is the correct symbol for an isotope of helium with 2 neutrons?
    11·1 answer
  • What two forces are balanced in what we call gravitational equilibrium?
    10·1 answer
  • Fon of the assignment will be graded by your teacher Question: In a lab experiment, A square of black paper and a square of whit
    8·1 answer
  • Define resistance and resistivity and also give the relationship between t
    14·1 answer
  • Describe the disadvantages of using uranium-238 for dating.
    11·1 answer
  • 3.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!