Download App

Work And Energy — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceWork And Energy1 Mark
Question
From the following statements find the one that is NOT correct :
✓

Answer

  1. A ball rolling on the ground has kinetic energy but no mechanical energy
Explanation:
The energy of an object by virtue of its motion is known as potential energy.
The energy possessed by a body due to its change in position or shape is called potential energy. For example, A stretched rubber band.
The sum of kinetic energy and potential energy of an object is its total mechanical energy.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 M]" from Work And Energy→Work And Energy — all question types→Science STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

What type of waves are generated by SONAR device fixed to a fishing ship?
  1. Water waves.
  2. Radio waves.
  3. Sound waves.
  4. Infrared waves.
→
A motorcycle and a car start from rest at the same place at the same time and travel in the same direction.The motorcycle accelerates uniformly at $1m/ s^2$ up to a speed of $36\ km/ h$ and the car at $0.5m/ s^2$ up to a speed of $54\ km/ h.$Then the distance at which the car overtakes the cycle-
→
Which of the following process/ processes release heat?
  1. Condensation.
  2. Vaporization.
  3. Freezing.
  4. Melting.
→
The atomic number of an element X is 8 and that of element Y is 4. Both these elements can exhibit a valency of:
→
Tendency of a body to resist change in state of rest or motion is called:
→
Which of the following statement is always correct?
→
The Bohr model of atoms:
→
Centrosome occurs in:
→
A car is moving with uniform velocity on a rough law of motion. horizontal road. Therefore, according to Newton's first.
→
The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?
→