Question

A particle moves for 20 s with speed 6 m/s then for another 20s with speed 8 m/s and finally moves for next 20 s with speed 10 ms. The average speed of the particle for the entire trip is​

Answer 1

hi friend ☺️

Totaldistancecoveredbyparticle d=v1t1+v2t2+v3t3

∵t1=t2=t3=20sec

d=20(3+4+5)= 240 m

Totaltime,

• T= 3×20=60sec.

Avgvelocity

• v=Td=60240=4 m/s