wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

If the velocity of an object doubles, then how does its kinetic energy change?


Open in App
Solution

Step 1- Let velocity of an object= v m/s
Let mass of an object= m
Step 2- The kinetic energy of an object with mass m and velocity v is given by-
K.E=mv22--------------------(I)
Step 3- Let's v' is the increased velocity and KE' is the kinetic energy of an object.
K.E'=m(v')22-----------------(II)
According to the given question- v'=2v m/s
Substituting the value of v' in equation (II)
K.E'=m(2v)22K.E'=4mv22K.E'=4(K.E)----Usingequation(I)

Hence kinetic energy of an object will become four-time if the velocity of an object doubles.


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Satellite Launch Vehicle and Jounney to PSLV Tackle
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon