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
Veseljchak [2.6K]
3 years ago
9

Which one of the following statements concerning momentum is true? Group of answer choices Momentum is a force. Momentum is a sc

alar quantity. The SI unit of momentum is kg *m^2/s. The momentum of an object is always positive. Momentum and impulse are measured in the same units.
Physics
1 answer:
gtnhenbr [62]3 years ago
3 0

Question:

Which one of the following statements concerning momentum is true? Group of answer choices

A.Momentum is a force.

B.Momentum is a scalar quantity.

C.The SI unit of momentum is kg *m^2/s.

D.The momentum of an object is always positive.

E.Momentum and impulse are measured in the same units.

Answer:

Correct answer is E.

Explanation:

A. Momentum is not force ,but force is rate of change of momentum , so this statement is wrong.

B. Momentum is a vector quantity , it has magnitude and direction as well.

So statement is wrong.

C. The SI unit of momentum is kg *m/s. Wrong statement.

D.Momentum of object may be negative positive or zero. So statement is correct.

E. Both momentum and impulse has unit kg *m/s. So statement is correct.

You might be interested in
Choose the statement(s) that is/are true about the ratio \frac{C_p}{C_v} C p C v for a gas? (Ii) This ratio is the same for all
Blababa [14]

Answer:

(i) false

(ii) true

(iii) true

(iv) false

Explanation:

(i) The ratio of Cp and Cv is not constant for all the gases. It is because the value of cp and Cv is different for monoatomic, diatomic and polyatomic gases.

So, this is false.

(ii) For monoatomic gas

Cp = 5R/2, Cv = 3R/2

So, thier ratio

Cp / Cv = 5 / 3 = 1.67

This statement is true.

(iii) for diatomic gases

Cp = 7R/2, Cv = 5R/2

Cp / Cv = 7 / 5 = 1.4

This statement is true.

(iv) It is false.

6 0
3 years ago
To solve a problem using the equation for keplerâs third law, enrico must convert the average distance of mars from the sun from
Natali5045456 [20]
1 astronomical unit = 149597870700m
Enrico should divide distance in meters with this number.
3 0
3 years ago
Read 2 more answers
A boat is travelling due west at a speed of 47 miles per hour. If the boat started off 170 miles directly north of the city of S
ankoles [38]
Answer is miles sir your welcome it was simple
6 0
3 years ago
A 1.3-kg model airplane flies in a circular path on the end of a 23-m line. The plane makes
storchak [24]

(a) The plane makes 4.3 revolutions per minute, so it makes a single revolution in

(1 min) / (4.3 rev) ≈ 0.2326 min ≈ 13.95 s ≈ 14 s

(b) The plane completes 1 revolution in about 14 s, so that in this time it travels a distance equal to the circumference of the path:

(2<em>π</em> (23 m)) / (14 s) ≈ 10.3568 m/s ≈ 10 m/s

(c) The plane accelerates toward the center of the path with magnitude

<em>a</em> = (10 m/s)² / (23 m) ≈ 4.6636 m/s² ≈ 4.7 m/s²

(d) By Newton's second law, the tension in the line is

<em>F</em> = (1.3 kg) (4.7 m/s²) ≈ 6.0627 N ≈ 6.1 N

4 0
3 years ago
How much current does a 10.0 Ω resistor draw from a 12 V battery?
Amiraneli [1.4K]
The answer would be B.
(V=IR, 12-10i, 12/10=1.2)
7 0
3 years ago
Other questions:
  • Count Rumford concluded that heat energy is produced by
    11·1 answer
  • Which statement accurately describes the illustration?
    6·2 answers
  • The surface or material that underlies a two-dimensional work of art is called the ____.
    12·1 answer
  • If the current in this circuit is 3 A, what must be the value of R3?
    15·1 answer
  • A dog sledding team is comprised of a 80.0 kg musher (the person driving the sled), a 21.0 kg sled and four dogs. assume each do
    15·1 answer
  • during a crash, the acceleration was less than 30g. Calculate the force on a 70 kg person accelerating at this rate.
    11·1 answer
  • What effect does temperature have on the composition of ocean water?
    9·2 answers
  • A train travels due south at 25 m/s (relative to the ground) in a rain that is blown toward the south by the wind. The path of e
    14·1 answer
  • An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm. A 21
    15·1 answer
  • A shot putter heaves a 7.26kg shot with final velocity of 7.50m/s what is kinetic energy?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!