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
Anastasy [175]
3 years ago
8

A projectile is thrown with velocity v at an angle θ with horizontal. When the projectile is at a height equal to half of the ma

ximum height, the vertical component of the velocity of projectile is ____? ​
Physics
2 answers:
raketka [301]3 years ago
6 0

  • Let, the maximum height covered by projectile be \sf{H_m}

\purple{ \longrightarrow  \bf{h_m =  \dfrac{ {v}^{2} \: {sin}^{2} \theta  }{2g} }}

  • Projectile is thrown with a velocity = v
  • Angle of projection = θ

  • Velocity of projectile at a height half of the maximum height covered be \sf{v_0}

\qquad______________________________

Then –

\qquad \pink{  \longrightarrow \bf{ \dfrac{h_m}{2}  = \dfrac{ {v_0}^{2} \: {sin}^{2} \theta  }{2g} }}

\qquad \longrightarrow \sf{ \dfrac{ {v}^{2}  \: {sin}^{2} \theta  }{2g} \times  \dfrac{1}{2}  =  \dfrac{ {v_0}^{2} \: {sin}^{2} \theta  }{2g} }

\qquad\longrightarrow  \sf{ \dfrac{ {v}^{2}  \: {sin}^{2} \theta  }{4g}  =  \dfrac{ {v_0}^{2} \: {sin}^{2} \theta  }{2g} }

\qquad\longrightarrow  \sf{ \dfrac{ {v}^{2}  \: {sin}^{2} \theta  }{2}  =   {v_0}^{2} \: {sin}^{2} \theta }

\qquad\longrightarrow  \sf{ \dfrac{ {v}^{2} }{2}  =   {v_0}^{2} }

\qquad\longrightarrow \bf{v_0 =   \sqrt{ \dfrac{ {v}^{2} }{2} } =  \dfrac{v}{ \sqrt{2} }  }

  • Now, the vertical component of velocity of projectile at the height half of \sf{h_m} will be –

\qquad \longrightarrow   \bf{v_{(y)}=v_0 \: sin \theta }

\qquad \longrightarrow \bf{v_{(y)} = \dfrac{v}{ \sqrt{2} }  \: sin \theta =  \dfrac{v \: sin \: \theta}{ \sqrt{2} }  }

Therefore, the vertical component of velocity of projectile at this height will be–

☀️\qquad\pink {\bf{ \dfrac{v \: sin \:  \theta}{ \sqrt{2} }} }

DedPeter [7]3 years ago
4 0

Answer:

A projectile is thrown with velocity v at an angle θ with horizontal. When the projectile is at a height equal to half of the maximum height, the vertical component of the velocity of projectile is v sintheta / √2

You might be interested in
Current flowing in a circuit depends on two variables. Identify these variables and their relationship to current.
Nuetrik [128]
Wow ! This question reads like it might have come from one of
Faraday or Maxwell's original laboratory notebooks.

Choice-A is the correct one, when you consider what "conductance"
means. Conductance is just 1/resistance .

So when you see
"A) Current is proportionate to the conductance of the circuit and
precisely proportional to the voltage applied across the circuit."

what it's saying is
"Current is inversely proportional to the resistance of the circuit, and
directly proportional to the voltage applied across the circuit."

If you write the equation for all those words, it looks like

I = V / R

and that's correct.
5 0
4 years ago
Read 2 more answers
Help me please with science
Simora [160]

Answer:its b

Explanation:

8 0
3 years ago
A space station moves in a circular orbit around Earth. Which of the following statements describes the centripetal force acting
drek231 [11]
C.
because centripetal means that force only acts in the center of body in motion
8 0
3 years ago
What would happen to Earth if ocean floor were created at divergent boundaries at a faster rate than it is destroyed at converge
Gennadij [26K]

Answer:

The Earth would increase in volume

Explanation:

What would happen to Earth if ocean floor were created at divergent boundaries at a faster rate than it is destroyed at convergent boundaries?

Divergent boundaries are boundaries where plates pull away from each other, forming mild earthquakes and volcanoes as magma comes to the surface. Earthquakes are as a result of vibrations travelling within the earth or ocean floors . Volcanoes occur as a result of the eruption of  molten magma from the ocean floor

In divergent boundaries, the plates pull away and and the weakened crust in between collapse leaving more space thereby increasing in volume.

Convergent boundaries are boundaries that pull into each other. mountain chains are formed as the two plates push into each other if they are of the same density.

4 0
4 years ago
A constant force of 4.0 N acts on a variety of objects. The greatest acceleration will occur in the object that has
zaharov [31]
In the object that has, the least inertia.
8 0
3 years ago
Other questions:
  • What causes atoms to form covalent bonds?
    13·1 answer
  • An astronomer is trying to estimate the surface temperature of a star with a radius of 5.0×108m by modeling it as an ideal black
    10·1 answer
  • Akia is balancing the equation Na + H2O NaOH + H2. He tries to find the coefficients that will balance the equation.
    9·2 answers
  • True or False along a divergent boundary, two plates slip past each other,moving in opposite directions.
    8·1 answer
  • the skate shop owner wants 30 percent of each order to include longboards. he wants to know how many longboards to order out of
    6·2 answers
  • What if we all jumped at the same time?
    11·1 answer
  • Read the following excerpt about water availability to living organisms.
    10·2 answers
  • If two people answer i will give brainliest to the first one that answers if right
    13·1 answer
  • What is the charge of an ion if it has 4 protons and 6 electrons?
    7·2 answers
  • An electron is traveling in the positive x direction. A uniform electric field is present and oriented in the negative z directi
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!