UrbanPro

Take Class 11 Tuition from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Search in

A car drives along the straight level frictionless road by an engine delivering constant power. How is velocity of the car related to time elapsed?

Asked by Last Modified  

2 Answers

Learn Physics

Follow 2
Answer

Please enter your answer

Power is given by f.vwhere f is force and v is velocity of particle power =kmav=km(dv/dt)v=kmdv x v= kdtintegrating both sides mv^2=ktv is directly proportional to√t
1 Comments

Tutor

Power =Force*Velocity Power=Const Now multiply 't' both sides So power*time=Energy Const*t=m.a.v.t Const *t=m.dv/dt.(v).t Now by rearrangement Const/m*(dt)=vdv Now integ both sides Const/m*(t)=v^2/2 Therefore V= const *root (t) :)
read more

Power =Force*Velocity 

Power=Const

Now multiply 't' both sides

So power*time=Energy

Const*t=m.a.v.t

Const *t=m.dv/dt.(v).t

Now by rearrangement 

Const/m*(dt)=vdv

Now integ both sides

Const/m*(t)=v^2/2

Therefore

V= const *root (t)

:)

 

read less
Comments

Related Questions

derivation of v2/r=ac
It can be obtained if one knows about the terms involved in centripetal accelaration
Indra
0 1
9

What is the correct definition and formula of ohms law.? 

Ohms law states that the current in a circuit is directly proportional to the voltage applied across its terminal and inversely proportional to the resistance in the circuit provided the temperature remains...
Ajay Singh

Sun: Largest source of energy is made up of?

Organic molecules.hydrocarbons.fossil fuels.hydrogen and carbon mainly.
Deepika T.

Fixity is always needed for rotational motion?

Yes for pure rotation, the distance between two particles will always remain constant.
Rahul Srivastava

Why Saturn has visible rings but other planets do not have such rings ?

becauase saturn has the strongest gravitational force which keeps the dust particles to rotate in an orbit
Aditya Kumar
0 0
9

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons



Frame of Reference
Frame of reference:When the position of a particle in space changes with time, it is said to be in motion. To describe motion, a frame of reference is needed first and foremost. The set of spatial coordinates...

Dot Product of Vectors
Dot or Scalar Product of Vectors Dot Product of two vectors A and B is defines as product of magnitude of the vectors and cosine of the angle between them. A•B = |A||B|CosT, Where T is the angle...

Physics - Learn the easy way
A systematic teaching process is followed for understanding of the topics which then followed by practice exercises to grasp the idea and concept of the topics. Lesson Outline for topic physics topic...

Recommended Articles

Learning for every child starts from a very young age. While the formal methods include school curriculums and private lessons, the informal methods include dancing, music, drawing, and various fun-filling activities. Playing games and practising these types of activities helps the children get out of boredom and...

Read full article >

Quality education does not only help children to get a successful career and life, but it also hugely contributes to society. The formal education of every child starts from school. Although there are numerous schools, parents find it challenging to choose the right one that would fit their child. It is difficult for them...

Read full article >

With the mushrooming of international and private schools, it may seem that the education system of India is healthy. In reality, only 29% of children are sent to the private schools, while the remaining head for government or state funded education. So, to check the reality of Indian education system it is better to look...

Read full article >

While schools provide formal education to the children, the home is where they start learning about things informally. Parents think that schools will take the initiative to educate their children. Well, this is partially true, as parents also play an essential role in bringing up their child. For the development of particular...

Read full article >

Looking for Class 11 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for Class 11 Tuition Classes?

The best tutors for Class 11 Tuition Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take Class 11 Tuition with the Best Tutors

The best Tutors for Class 11 Tuition Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more