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
ch4aika [34]
3 years ago
5

Suppose a parachutist is falling toward the ground, and the downward force of gravity is exactly equal to the upward force of ai

r resistance. Which statement is true?
a. The velocity of the parachutist must be zero.
b. The velocity of the parachutist is not changing with time.
c. The velocity of the parachutist is increasing with time.
d. The velocity of the parachutist is increasing with time.
Physics
1 answer:
Serhud [2]3 years ago
7 0

Answer:

Option b. is correct.

Explanation:

In the given question a parachutist is falling toward the ground .

Also, the downward force of gravity is exactly equal to the upward force of air resistance.

So, net force applied to the parachutist is equal to zero ( because both force acts in opposite direction ).

Now by first law of motion  :

An object will be in rest or in constant speed unless and until no external force is applied on it .

So, in the question the velocity of the parachutist is not changing with time.

Therefore, option b. is correct.

Hence, this is the required solution.

You might be interested in
The bird that migrates the farthest is the Arctic tern. Each year, the Arctic tern travels
Tanzania [10]

Answer: 131.14km per day

Explanation: since the second half of the terns migration takes 122 days we can assume that the full migration would take 244 days. using this we can divide the total distance by the total amount of days it takes (because speed = distance/time) which is 32,000/244, which would be 131.14

8 0
3 years ago
Does electrons have more mass than neutrons?
musickatia [10]

Answer:

No, neutrons have about the same mass as a proton, but both have more mass than electrons.

Hope this helps a bit,

Flips

3 0
3 years ago
List the types of electromagnetic radiation in order from lowest energy photons to highest energy photons.
frutty [35]

radio waves,X-rays,

Explanation:

In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves. Microwaves (like the ones used in microwave ovens) are a subsection of the radio wave segment of the EM spectrum.

8 0
3 years ago
Uuuuuuuuuuuuuuuuuummmmmmmmmmmmmmmmmmmm help
tatiyna
I think it 32, but i’m not sure
3 0
3 years ago
Read 2 more answers
a 2000 kg truck is moving eastward at 25 m/s. it collides inelastically with a 1500 kg truck traveling southward at 30 m/s. they
Otrada [13]

According to the given statement Final velocity when they stick together is 8.735i^ + 11.25j^​

<h3>What is collision and momentum?</h3>

The unit of momentum is kg ms -1. Momentum is a vector parameter that is influenced by the object's direction. During collisions involving objects, momentum is a relevant concept. The final velocity before a collision between two objects equals the total motion after the impact (in the absence of external forces).

<h3>Briefing:</h3>

From conservation of momentum

Initial momentum = final momentum

m u +M U =(m+M) V

2000×25 i^ +1500×30 j^​ =(2000+1500) V

V = 8.735i^ + 11.25j^​

Final velocity when they stick together is 8.735i^ + 11.25j^​

To know more about Collide visit:

brainly.com/question/27993473

#SPJ4

The complete question is -

A 2000 kg truck is moving eastward at 25 m/s. it collides inelastically with a 1500 kg truck traveling southward at 30 m/s. they collide at the intersection. Find the direction and magnitude of velocity of the wreckage after the collision, assuming the vehicles stick together after the collision.

6 0
1 year ago
Other questions:
  • With what speed must a ball be thrown vertically from ground level to rise to a maximum height of 41 m
    9·1 answer
  • Water is boiling in a clear pot, as shown in the picture. How do the water molecules closest to the burner compare to the water
    5·2 answers
  • In _____, marketers determine price based on what consumers are willing to pay and then subtract desired margins to yield target
    5·1 answer
  • The part of Earth's rocky outer layer that makes up the land masses is the
    5·1 answer
  • ¿que es el calor latente
    5·1 answer
  • An object is thrown directly up (positive direction) with a velocity (v o ) of 20.0 m/s and d o = 0. How high does it rise (v =
    14·1 answer
  • A lump of steel of mass 10kg at 627 degree Celsius is dropped in 100kg oil at 30 degree Celsius . the specific heat of steel And
    14·1 answer
  • Be sure to answer all parts. Convert: (a) 29.8°C (the melting point of gallium) to degrees Fahrenheit °F (b) 172.9°F (the boilin
    5·1 answer
  • A woman holds a frozen smoothie in her hand on a warm
    15·2 answers
  • Two 1.50-V batteries-with their positive terminals in the same direction-are inserted in series into a flashlight. One battery h
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!