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
laiz [17]
3 years ago
11

What is the impulse of a 3 kg object that starts from rest and moves to 20 m/s?

Physics
1 answer:
IrinaK [193]3 years ago
8 0

Answer:

The impulse on the object is 60Ns.

Explanation:

Impulse is defined as the product of the force applied on an object and the time at which it acts. It is also the change in the momentum of a body.

F = m a

F = m(\frac{v_{2}  - v_{1} }{t})

⇒     Ft = m(v_{2} - v_{1})

where: F is the dorce on the object, t is the time at which it acts, m is the mass of the object, v_{1} is its initialvelocity and v_{2} is the final velocity of the object.

Therefore,

impulse = Ft = m(v_{2} - v_{1})

From the question, m = 3kg, v_{1} = 0m/s and v_{2} = 20m/s.

So that,

Impulse = 3 (20 - 0)

             = 3(20)

             = 60Ns

The impulse on the object is 60Ns.

You might be interested in
Calcular la resistencia de una varilla de grafito de 170 cm de longitud y 60 mm2. Resistividad grafito 3,5 10-5 Ωm
ozzi

Answer:

R = 0.992 Ω

Explanation:

En esta pregunta, dada la información que contiene, debemos calcular la resistencia de la varilla de grafito.

Matemáticamente,

Resistencia = (resistividad * longitud) / Área De la pregunta;

Resistividad = 3,5 * 10 ^ -5 Ωm

longitud = 170 cm = 1,7 m

Área = 60 mm ^ 2 = 60/1000000 = 6 * 10 ^ -5 m ^ 2

Conectando estos valores a la ecuación anterior, tenemos;

Resistencia = (3.5 * 10 ^ -5 * 1.7) / (6 * 10 ^ -5) =

(3.5 * 1.7) / 6 = 0.992 Ω

3 0
3 years ago
Plz help w answer 1:/ confused ash
Galina-37 [17]

Answer:

I would say d I had the same question yesterday and I got it correct so hope that helps

5 0
3 years ago
Read 2 more answers
11. A student lifts a 25 kg mass a vertical distance of 1.6 m in a time of 2.0 seconds.
goldenfox [79]

Answer:

a) 245 N

b) 392 J

c) 196 W

Explanation:

a) Force needed to lift the 25 kg object is the same as the weight of the object:

Force= m * g = 25kg * 9.8 \frac{m}{s^2} = 245 N

b) Work is the force exerted times the distance moved:

Work = F * d = 245N * 1.6 m = 392 Joules = 392 J

c) The power exerted is the quotient of the work done over the amount of time it took to move the object:

4 0
3 years ago
Help me please on this
Norma-Jean [14]
So what u do is 2112393921010
6 0
2 years ago
Every force has both _____ and ______.
Natali5045456 [20]
A.)  All the vector quanties have magnitude(strength) as well as direction. Since force is a vector quantity, it has both strength as well direction. 
7 0
3 years ago
Other questions:
  • Which of Newton's laws accounts for the following statement?
    12·2 answers
  • Electromagnetic induction is the production of a voltage across a conductor when it is exposed to a varying magnetic field. This
    13·2 answers
  • Predict whether an element with a valence of 8 is mostly likely form ionic bonds ,covalent bonds or no chemical bonds with other
    8·2 answers
  • Calculate the height of a column of carbon tetrachloride, CCl4(l), with a density of 1.59 g/mL that exerts the same pressure as
    14·1 answer
  • If do 50 J of Work in 20 seconds, what is my Power ?
    14·1 answer
  • Which statement is true about a falling object? (Assume no
    13·1 answer
  • For each picture below identify the material and closing the sandwich as transparent translucent or opaque
    8·1 answer
  • Choose the answer to fill in the blank, which best completes the sentence.
    14·2 answers
  • Estimate the volume of each ball. Use the formula
    9·2 answers
  • A 63.0kg sprinter starts a race with an acceleration of 24.0m/s/s . what is the net force of him
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!