Question

Formulas for work power energy class 11

Answer 1

Answer

1. work done, W=F.s =Fscostheta

2.kinetic energy, Ek =1/2 mv2=p2/2m

3.work energy theorem

w= change of kinetic energy=1/2mv2-1/2mu2

4.gravitational potential energy,Ep=mgh

5.power,P=work done/time taken=w/t=fvcostheta

6.for explosion of body

E1/E2=M2/M1

7.WORK DONE BY FRICTIONAL FORCE,

w=frictional force*displacement

Explanation: