मराठी

When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus? Explain.

Advertisements
Advertisements

प्रश्न

When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus? Explain.

When a ball is thrown inside a moving bus, does its kinetic energy depend on the speed of the bus?

स्पष्ट करा
दीर्घउत्तर
Advertisements

उत्तर

The kinetic energy of a ball thrown inside a moving bus depends on the speed of the bus because the kinetic energy is directly proportional to the square of the speed of the moving ball. The speed of the bus adds up to the speed with which the ball is thrown inside the bus. Hence, more the speed of bus, higher will be the ball’s kinetic energy.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Work, Power and Energy - Intex Question [पृष्ठ ३७]

APPEARS IN

लखमीर सिंह Physics [English] Class 10 ICSE
पाठ 2 Work, Power and Energy
Intex Question | Q 1. | पृष्ठ ३७
लखमीर सिंह Physics Part 1 [English] Class 9
पाठ 4 Work and energy
Very Short Answers 1 | Q 79 | पृष्ठ १४९

संबंधित प्रश्‍न

Write an expression for the kinetic energy of an object.


Define the term kinetic energy. Give one example of a body which possesses kinetic energy.


Two toy-cars A and Bof masses 200 g and 500 g respectively are moving with the same speed. Which of the two has greater kinetic energy?


Write the expression for the kinetic energy of a body explaining the meaning of the symbols used.


Two bodies of equal masses are moving with uniform velocities v and 2v. Find the ratio of their kinetic energies.


A body of mass 60 kg has the momentum 3000 kg m s-1. Calculate:

  1. the kinetic energy.
  2. the speed of the body.

How much work is needed to be done on a ball of mass 50 g to give it a momentum of 5 kg cm s-1?


A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?


A body falls freely under gravity from rest. Name the kind of energy it will possess on reaching the ground.


Write an expression for the kinetic energy of a body of mass m moving with a velocity v.


How fast should a man of 50 kg run so that his kinetic energy be 625 J?


A horse and a dog are running with the same speed. If the weight of the horse is ten times that of the dog, What is the ration of their kinetic energies?


The momentum of a bullet of mass 20 g fired from a gun is 10 kg.m/s. The kinetic energy of this bullet in kJ will be :


Which of the following does not posses the ability to do work not because of motion?


If an object has 0 momentum, does it have kinetic energy? Explain your answer.


Find out the form of energy possessed by the following thing.

Water falls


The energy possessed by a cricket ball bowled by a player is ______.


Water stored in water dams possesses kinetic energy.


A ball of mass 0.5 kg slows down from a speed of 10 m s−1 to that of 6 m s1. Calculate the change in the kinetic energy of the ball.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×