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
andreev551 [17]
3 years ago
5

a 70 kg skydiver opens her parachute. The force due to air resistance is now 1200 N. what is the acceleration of the skydiver

Physics
1 answer:
Natasha_Volkova [10]3 years ago
7 0
Around 50 I think so
You might be interested in
Will give brainliest! 50 points!!!
tatiyna

Answer:

C

Im not totally sure but that's what my science teacher taught me sorry if is wrong

6 0
2 years ago
What is static and sliding friction
vodka [1.7K]
Static friction is the friction that exists between a stationary object and the surface on which it's resting.
frictional force occurs when you try to push an object alongside a surface.
5 0
2 years ago
La ecuación de la posición de una esferita está dada por: r(t)=(2.Cos(πt) i-3.Sen(πt) j) (m) ¿Cuál es la velocidad de la esferit
katovenus [111]

Answer:

v = (-4.44 i^ + 6.66 j^ )  m/s, a_average =( 0 i^ -2π j^) m/s²

Explanation:

The expression left corresponds to an oscillatory movement (MAS), the speed is defined by

         v = dr / dt

the function of position

         r = 2 cos πt  i^  + 3 sin πt  j^

let us note that it is a movement in two dimensions

let's perform the derivative

          v = -2π sin πt  i^  + 3π cos πt  j^

we evaluate this expression for t = 0.25 s, remember that the angle is in radians

          v = -2π sin (π 0.25) i^ + 3π cos (π 0.25) j^

           v = (-4.44 i^ + 6.66 j^ )  m/s

To calculate the mean acceleration we use the expression

           a = (v_{f} - v_{o}) / Δt

 

indicates that the time is the first 3 s

       

we look for the initial velocity t = 0 s

           v₀ = 0 i ^ + 3π j ^

         

we look for the fine velocity, t = 3 s

          v_f = - 2π sin (π 3) + 3π cos (π 3) j ^

          v_f = 0 i ^ - 3π j ^

we calculate the average acceleration

            Δt = (3 -0) = 3 s

           a_average = (0-0) / 3 i ^ + (-3π - 3π) / 3

           a_average = (0 i ^ -2π j ^ ) m/s²

6 0
3 years ago
Is this equation balanced? 2HCl + CaCO3 → CaCl2 + H2O + CO2
Serggg [28]

Answer:

Yes it is

Explanation:

the sum moles at the left side equals the sum of moles at the right side

7 0
3 years ago
Did I do these questions correctly?
Elena L [17]
For number 11, you should say that there is more pollution and fossil fuels being burned.
8 0
2 years ago
Other questions:
  • An eagle is flying horizontally at a speed of 4.10 m/s when the fish in her talons wiggles loose and falls into the lake 6.20 m
    6·1 answer
  • According to Coulomb’s Law, the force between two charged objects is related to _____. the distance separating them the mass of
    8·2 answers
  • A solid iron ball of mass 770 kg is used on a building site. The ball is suspended by a rope from a crane. The distance from the
    12·1 answer
  • Can someone help me on 2 science question,
    7·2 answers
  • In which state of matter do the particles have the most energy?
    7·2 answers
  • A barbell is 1.5 m long. Three weights, each of mass 20 kg, are hung on the left and two weights of the same mass, on the right.
    8·1 answer
  • 120 J of work was done to lift an object 6 m above
    6·1 answer
  • How long did it take the shuttle shock to fall 12 meters
    5·1 answer
  • PLESE HELP !!!!!!!!!
    7·1 answer
  • Describe an instance where you might use standard rounding. Describe an instance where you might use order of magnitude estimati
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!