Q. 53.7( 6 Votes )

A body is falling freely under the action of gravity alone in vacuum. Which of the following quantities remain constant during the fall?
A. Kinetic energy.

B. Potential energy.

C. Total mechanical energy.

D. Total linear momentum.

Answer :

During free fall,

K.E. increases, momentum increases and P.E. decreases


Total mechanical energy=K.E.+P.E.


As P.E. decreases and K.E. increases M.E. remains constant.


Option (c) is correct.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Inelastic collisions in 1 DInelastic collisions in 1 DInelastic collisions in 1 D44 mins
Work, Energy & Power (Lecture 5)Work, Energy & Power (Lecture 5)Work, Energy & Power (Lecture 5)54 mins
Check Your progress Part 2| Interactive Quiz: Work, Energy & PowerCheck Your progress Part 2| Interactive Quiz: Work, Energy & PowerCheck Your progress Part 2| Interactive Quiz: Work, Energy & Power44 mins
Work, Energy & Power (Lecture 6)Work, Energy & Power (Lecture 6)Work, Energy & Power (Lecture 6)41 mins
Work, Energy & Power (Lecture 4)Work, Energy & Power (Lecture 4)Work, Energy & Power (Lecture 4)50 mins
More About CollisionsMore About CollisionsMore About Collisions49 mins
Elastic collisions in 1 DElastic collisions in 1 DElastic collisions in 1 D50 mins
Work, Energy & Power (Lecture 2)Work, Energy & Power (Lecture 2)Work, Energy & Power (Lecture 2)44 mins
Work, Energy & Power (Lecture 1)Work, Energy & Power (Lecture 1)Work, Energy & Power (Lecture 1)59 mins
Goprep Genius | Interactive Quiz on Work Energy TheoremGoprep Genius | Interactive Quiz on Work Energy TheoremGoprep Genius | Interactive Quiz on Work Energy Theorem33 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :