मराठी

A Car is Accelerated on a Levelled Road and Acquires a Velocity 4 Times of Its Initial Velocity. During this Process, the Potential Energy of the Car : - Science

Advertisements
Advertisements

प्रश्न

A car is accelerated on a levelled road and acquires a velocity 4 times of its initial velocity. During this process, the potential energy of the car :

पर्याय

  • does not change

  • becomes twice that of initial potential energy

  • becomes 4 times that of initial potential energy

  •  becomes 16 times that of initial potential energy

MCQ

उत्तर

Potential energy of an object depends only on its position above the ground and mass.. So, the potential energy of a car traveling on a levelled road does not change.
Therefore, the answer is,
(a) does not change

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Work and energy - Very Short Answers 1 [पृष्ठ १४८]

APPEARS IN

लखमीर सिंह Physics (Science) [English] Class 9 ICSE
पाठ 4 Work and energy
Very Short Answers 1 | Q 59 | पृष्ठ १४८

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

A mass of 10 kg is at a point A on a table. It is moved to a point B. If the line joining A and B is horizontal, what is the work done on the object by the gravitational force? Explain your answer.


A body of mass m is moved from ground to a height h. If the force of gravity on mass of 1 kg is g newton, find the force needed to lift the body.


The gravitational potential energy stored in a box of weight 150 kgf is 1.5 × 104 J. Find the height of the box. Take 1 kgf = 10 N.


Two bodies A and B of equal masses are kept at heights of h and 2h respectively. What will be the ratio of their potential energies?


State whether the following statement is true or false :
The potential energy of a body of mass 1 kg kept at a height of 1 m is 1 J.


A weightlifter is lifting weights of mass 200 kg up to a height of 2 metres. If g = 9.8 m s−2, calculate :
potential energy acquired by the weights.


A boy weighing 50 kg climbs up a vertical height of 100 m. Calculate the amount of work done by him. How much potential energy does he gain? (g = 9.8 m/s2)


A man is instructed to carry a package from the base camp at B to summit A of a hill at a height of 1200 metres. The man weighs 800 N and the package weighs 200 N. If g = 10 m/s2,

  1. how much work does man do against gravity?
  2. what is the potential energy of the package at A if its is assumed to be zero at B?

If we increase the velocity of a car moving on a flat surface to four times its original speed, its potential energy ______.


The potential energy of your body is least when you are ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×