Questions
A force of 1N acts on a 1kg mass at rest for 1s. In another case 1N force acts on 1kg mass at rest and moves it through 1m. The ratio of kinetic energies in the two cases is
1 : 1
1 : 2
1 : 4
1 : √2
detailed solution
Correct option is B
In the first case Let v1 be the final velocity of the mass
F.t = mvf - mvi
⇒ 1 x 1= 1 x v1 - 1 x 0
⇒ v1 = 1m/s.
In second case, Let v2 be the final velocity of the mass
Now,
In the first case Let v1 be the final velocity of the massF.t = mvf - mvi⇒ 1 x 1= 1 x v1 - 1 x 0⇒ v1 = 1m/s.In second case, Let v2 be the final velocity of the massNow,
Talk to our academic expert!
Create Your Own Test
Your Topic, Your Difficulty, Your Pace
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests