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
Sergeu [11.5K]
2 years ago
15

Which statement is true for the hang time of a projectile?​

Physics
1 answer:
Andre45 [30]2 years ago
5 0

Answer:

The hang time of a projectile can be calculated solely by knowing the vertical component of the velocity of projection

Explanation:

You might be interested in
A 70.9-kg boy and a 43.2-kg girl, both wearing skates face each other at rest on a skating rink. The boy pushes the girl, sendin
Lelechka [254]

Answer:

Explanation:

Given

mass of boy m_b=70.9\ kg

mass of girl m_g=43.2\ kg

speed of girl after push v_g=4.64\ m/s

Suppose speed of boy after push is v_b

initially momentum of system is zero so final momentum is also zero because momentum is conserved

P_i=P=f

0=m_b\cdot v_b+m_g\cdot v_g

v_b=-\frac{m_g}{m_b}\times v_g

v_b=-\frac{43.2}{70.9}\times 4.64  

v_b=-2.82\ m/s

i.e. velocity of boy is 2.82 m/s towards west                

8 0
2 years ago
A 0.750kg block is attached to a spring with spring constant 13.5N/m . While the block is sitting at rest, a student hits it wit
vazorg [7]

Answer:

A)A=0.075 m

B)v= 0.21 m/s

Explanation:

Given that

m = 0.75 kg

K= 13.5 N

The natural frequency of the block given as

\omega =\sqrt{\dfrac{K}{m}}

The maximum speed v given as

v=\omega A

A=Amplitude

v=\sqrt{\dfrac{K}{m}}\times A

0.32=\sqrt{\dfrac{13.5}{0.75}}\times A

A=0.075 m

A= 0.75 cm

The speed at distance x

v=\omega \sqrt{A^2-x^2}

v=\sqrt{\dfrac{K}{m}}\times \sqrt{A^2-x^2}

v=\sqrt{\dfrac{13.5}{0.75}}\times \sqrt{0.075^2-(0.075\times 0.75)^2}

v= 0.21 m/s

5 0
3 years ago
Which process is responsible for changing the composition of rock?
Crazy boy [7]

Erosion, weathering, mechanical changes, chemical changes.

Really, any interaction can change the composition of a rock whether it be done by man or through nature.

4 0
3 years ago
Read 2 more answers
Explain the relationship between speed, velocity and acceleration
Montano1993 [528]
Speed is the rate at which something covers a distance; velocity is the same but it takes into account whether it goes forwards or backwards; and acceleration is the rate of an increase in speed.
8 0
3 years ago
What type of force act on a man at room temperature and in a ground?
lakkis [162]
Isaac Newton’s second law of motion
6 0
3 years ago
Other questions:
  • Which of the following supports the theory of continental drift?
    9·1 answer
  • Nearly all physics problems will use the unit m/s squared. Why are the seconds squared?
    11·1 answer
  • Complete the paragraph to describe the relationship between kinetic energy and braking distance. Use . A car moves at a speed of
    10·2 answers
  • The brief wave of positive electrical charge that sweeps down the axon is _____.
    13·1 answer
  • List the copositional layers in order of most dense to least dense
    11·1 answer
  • Two charged objects are 1 meter apart. Calculate the magnitude of the electric force between them if the two charges are +1.0 μC
    8·1 answer
  • The following pairs of surfaces are pushed together with the same amount of force. Between which pair of surfaces will friction
    5·2 answers
  • Which fallacy is committed in the following argument?
    11·1 answer
  • Which light wave could be emitted from Light Source 2?<br> A<br> B<br> C<br><br> explain your answer
    14·2 answers
  • 3- A ball of mass 0,50 kg falls and hits the floor at 10m/s,
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!