A body covers half the distance with a speed of 20
m/s and the other half with a speed of 30 m/s. The
average velocity of the body during the whole journey is
2) 24 m/s
1) zero
3) 25 m/s
4) none of these
Answers
Answered by
2
Answer:
2)24m/s
Explanation:
Let the total distance be 2x.
For first half distance :
Speed is 20 m/s
Thus time taken t
1
=
20
x
For second half distance :
Speed is 30 m/s
Thus time taken t
2
=
30
x
Average velocity V
avg
=
t
1
+t
2
2x
⟹ V
avg
=
20
x
+
30
x
2x
=
20+30
2×20×30
=24 m/s
Answered by
1
Answer:
24
Explanation:
average velocity =2v1*V2/v1+V2
=2*20*30/20+30
=1200/50
= 24m/s
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