Questions
If the velocity v of a particle moving along a straight line decreases linearly with its displacement s from 20 m/s to a value approaching zero at s = 30 m figure, then acceleration of the particle at s = 15 m is
detailed solution
Correct option is D
The slope of the line = - 2/3The equation of line is given by(vâ20)=â23(sâ0)â´v=20â(2/3)sThe velocity at s = 15 m is given byV=dsdts=15m=20â23Ã15=10m/sThe acceleration can be obtained by differentiating eq. (1) with respect to time, i.e.,a=dvdt=0â23dsdtâ´dvdts=15m=â23dsdts=15m=â23Ã10=â203m/s2Talk to our academic expert!
Similar Questions
A particle moves in a straight line with retardation proportional to its displacement. Its loss of kinetic energy for any displacement x is proportional to
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