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
goldenfox [79]
3 years ago
9

A gymnast practices two dismounts from the high bar on the uneven parallel bars. during one dismount, she swings up off the bar

with an initial upward velocity of + 4.0 m/s. in the second, she releases from the same height but with an initial downward velocity of −3.0 m/s. what is her acceleration in each case? how do the final velocities of the gymnast as she reaches the ground differ?
Physics
1 answer:
mr_godi [17]3 years ago
3 0
<span>The working formula to analyze this problem is Vf^2 - Vo^2 = 2gs where Vf = velocity at which the gymnast hits the ground Vo = initial velocity of the gymnast (given as 4 m/s and -3 m/s) g = acceleration due to gravity = 9.8 m/sec^2 (constant) s = height at which gymnast starts her dismount For the first dismount, Vf^2 - (4)^2 = 2(9.8)(s) Vf^2 = 16 + 19.6s and for the second dismount, Vf^2 - (-3)^2 = 2(9.8)(s) Vf^2 = 9 + 1.6s Since "s" is the same for both dismounts, then her final velocity in the first dismount is higher than that of her second dismount.</span>
You might be interested in
Which of the following surface will absorb radiant heat energy best
OLga [1]

Answer:

D. Black

Explanation:

hope I help you.

3 0
2 years ago
Read 2 more answers
To calculate the heat needed to melt a block of ice at its melting point what do you need to know
Alisiya [41]
You have to know what the temperature of your suroundings first and then you can melt it with the tools you need. yeah that's another thing know what tools you need and then be safe!:D
3 0
3 years ago
If the marshmallows represent the atoms in the substance, which change of state is Freida modeling Freida wants to model the way
sashaice [31]

Answer: Melting

Explanation:

When Frieda made a pyramid of marshmallows, she was representing the atoms in a solid substance as the atoms are clumped together and unable to move.

When she then knocks it down, she is showing the movement of atoms in a liquid substance as they are now freer than they were before. The process by which substances go from solid to liquid is melting.

7 0
3 years ago
Read 2 more answers
Reduce<br> Reflects<br> Transfers<br> Stops
Bond [772]
I think transfers is the answer
4 0
3 years ago
which of the following statements best explains how consumers determine growth in technological areas
Mrac [35]
If these were the missing choices:

a)      Consumers fill out questionnaires concerning their need for new products.

b)      Consumers vote for politicians who decide which kind of research to support

c)       Consumers decide what to buy and what not to buy

d)      Consumers influence the decisions of private foundations by deciding where to donate money.


My answer would be: c)       <span>Consumers decide what to buy and what not to buy</span>

Every growth is based on the demand of the people. If a good or service is needed then its demand will increase. If a good or service is not needed then its demand will decrease until such time that said good or service will be eliminated. 

6 0
3 years ago
Other questions:
  • You're driving at 50 mph and then speed up to 70 mph. how much more "force" does the engine in your car have to produce to maint
    12·1 answer
  • How much force is needed to accelerate a 1,500 kg car at a rate of 7 m/s2?
    11·1 answer
  • Examples of black body radiators? Please
    13·1 answer
  • Open the attached image to see the question.
    10·1 answer
  • The displacement in simple harmonic motion is a maximum when the 1. velocity is a maximum. 2. kinetic energy is a maximum. 3. ve
    14·1 answer
  • A car traveled 60km in 45 min.What is the cars average speed in km/hr
    10·1 answer
  • Saturn isn’t the only planet with rings, but they are the most beautiful ones. <br> Fact or Opinion?
    8·1 answer
  • Tell me what the
    15·1 answer
  • Help someone
    14·1 answer
  • Physics part 1 <br><br> I need help answering these
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!