particle moves in a straight line in same direction for 20 seconds with velocity 3 metres per second and then moves with velocity 4 metres per second another 20 seconds and finally moved with 5 velocity V metres per second for next 20 seconds what is average velocity of particle
Answers
Answered by
7
Average velocity
=total displacement (d)
Total time(t)
Total displacement or d =total speed ×total time
=(3+4+5)m/s×(20+20+20)sec
=(12×60) metre
=720m
Therefore average velocity =
720
60 =12m/s
Hope its correct ,....
Answered by
9
Answer:
Total distance covered by particle d=v1 t1 +v2 t2 +v3 t3
∵t 1 =t 2 =t 3 =20sec
d=20(3+4+5)= 240 m
Total time, T= 3×20 =60sec.
Avg. velocity, v= d /T
= 240/60 =4m/s
Explanation:
..hope its helpfull........................
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