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

Friction is a self adjusting force. Justify.
When you move an object over any surface in any direction, frictional force acts in the opposite direction (as per definition - it is an opposing force). If you change the direction of the object, friction...
Jacob
0 0
6

Why sky appears to be blue?

We are able to see the color whose visible ray falls into our eyes. The rays from the sun get scattered by small dust particles or water droplets or other molecules in the air . Blue light gets scattered...
Rohit Singh

What is the difference between position vector and displacement vector?

Change in position vector is displacement.
Rahul Srivastava

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

Ask a Question

Related Lessons

Tension
Tension is a special type of force which is applicable in a stretchable body like rope or string. Its direction is towards the pulley. If rope or chain is massless,frictionless or smooth, then tension...

All you need to know about Motion, Velocity and Speed
Linear Motion also called rectilinear motion is a one-dimensional motion along a straight line, and can, therefore, be described mathematically using only one dimension. The linear motion can be of two...

Kinematics Parameters
1.1 SOME DEFINITIONS (a) Distance: Distance between two points is the length of actual path travelled by the particle. It is a scalar quantity. Unit : m(metre) (b) Displacement: Displacement...


Can there be a physical quantity that has no units and dimensions?
Yes,. Strain is a physical quantity that has no units and dimensions
C

Chandra Mohan Yadavalli

0 0
0

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