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
DerKrebs [107]
3 years ago
8

Which of the following observations indicates that an object is falling at terminal velocity?

Physics
1 answer:
vitfil [10]3 years ago
5 0

Answer:  D

Explanation:

When an object falls gravity is pulling down on it and is picking up speed, but as it gains speed air resistance becomes a faster. Air resistance increases with speed. And that force keeps it from accelerating eventually the object will pick up speed such that the force due to air resistance will keep it from getting any more speed at that point force due to air resistance is equal to its weight (mg) and the net force is equal to zero so it won’t accelerate any more at that point it is said to be moving in terminal velocity.

When an object has reached terminal velocity, it will have a constant velocity

You might be interested in
V=I/R correctly expresses the relationship between voltage, current, and resistance.
docker41 [41]
The correct answer is true
5 0
1 year ago
Read 2 more answers
A ball is dropped from a height of 20 meters. At what height does the ball have a velocity of 10 meters/second?
borishaifa [10]

Answer:B

Explanation:

Initial velocity, u=0m/s

Distance,s=20m

a=+g=9.8m/s*s

Using v*v=u*u+2gs

v*v=0+2*9.8*20

v*v=392

v=19.8

When s=20m, v = 19.8m/s

Therefore when v = 10m/s, s= 10*20/19.8

s =10.1m

6 0
3 years ago
A skateboarder rolls off a 2.5 m high bridge into the river. If the skateboarder was originally moving at 7.0 m/s, how much time
saul85 [17]

Answer:

  t = 0.714 s and  x = 5.0 m

Explanation:

This is a projectile throwing exercise, in this case when the skater leaves the bridge he goes with horizontal speed

         vₓ = 7.0 m / s

Let's find the time it takes to get to the river

         y = y₀ + v_{oy} t - ½ g t²

the initial vertical speed is zero and when it reaches the river its height is zero

        0 = y₀ + 0 - ½ g t²

        t = \sqrt{\frac{2y_o}{g}  }

        t = ra 2 2.5 / 9.8

        t = 0.714 s

the distance traveled is

       x = vₓ t

       x = 7.0 0.714

       x = 5.0 m

3 0
3 years ago
Which statement about projectile motion is true?
Svetllana [295]

C. The range of a projectile increases with an increase in the angle of launch.

3 0
3 years ago
Read 2 more answers
What do it mean by the value of gravitational constant is 6.67×10^-11Nm^2/kg^2<br>​
luda_lava [24]

Answer:

gravitational constant value means it was never change in any particular area of the Earth

8 0
2 years ago
Other questions:
  • What theory explains why the Earth is a magnet
    9·1 answer
  • How much force is needed to accelerate a 1750-kg car at a rate of 3 m/s2?
    7·1 answer
  • Which spill control and confinement method is used inside structures to remove and/or disperse harmful airborne particles, vapor
    12·1 answer
  • Which of the following statements concerning the lab is TRUE?
    7·1 answer
  • Show that the expression vf = vi + at is dimensionally correct
    7·1 answer
  • You are working as an expert witness for an attorney who is suing a shipping company. The company operates ships that carry crud
    8·1 answer
  • If you rub a balloon on your hair, you
    7·1 answer
  • An elevator with a mass of 2,560 kg is pulled straight up by a cable such that it accelerates at 4.5 m/s 2 in the upward directi
    12·1 answer
  • The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state
    13·2 answers
  • A sound wave produced by a clock chime is heard 400 m away 2.0 s later. The sound wave has a frequency of 512 Hz. What is its pe
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!