1.

Class 10th ICSE question (Physics work energy)..

Answer»

he KINETIC ENERGY of moving body is equal to be the product of the mass(m) of the body and square of its speed(v2).Kinetic energy =21×mass×(speed)2i.e., =21mv2Let mass of man is Mkg and speed is v and speed body is V1, the21Mv2=21{212Mv12}          ...........(i)when man speed up by 1m/s, thanv=v+1∴21M(v+1)2=21{2M}⋅v12     .............(ii)DIVIDING Eqs. (i) by (ii), we get(v+1)2v2=212v=v+1v=2HOPEthis helps you please make myanswer as brainlist and follow me...plzzz



Discussion

No Comment Found

Related InterviewSolutions