Question

2. In which of the following cases, the body is in motion Α) = 3 N norm Ffrict= 5 N B) Fapp = 5 N F = 40 W F = 25 N Fgr. Fgray = = 3 N F=15 N Enorm= 20 N D) norm. 3 Ftrict 5 Egray = 20 N gray= 3 N 25​

Answer 1

Answer:

dv=6−3v

dv=(6−3v)dt

   

∫6−3vdv=∫dt

    

3−1ln(6−3v)=t+lnc

         

c6−3v=e−3t

            

6−3v=ce−3t

v=31(6−ce−3t)

               

at t=0,v=0

                 

c=6

from above eqation

 v=2(1−e−3t)

Option B

Explanation:

option B

Answer 2

Answer:

A

hope you got your answer