a man covers half distance with speed v and remaining half with v1 and v2 for equal time interval. Find his average speed?
Answers
Answered by
0
Explanation:
Total distance travelled =s
to travel half distance, time taken =t
1
second half =t
2
distance travelled in first half =s/2
t
1
=
V
0
(S/2)
=
2V
0
S
time taken to cover second half is t
2
∴
2
S
=
2
t
2
V
1
+
2
t
2
V
2
S=t
2
(V
1
+V
2
)
t
2
=(
V
1
+V
2
S
)
total time taken =t
1
+t
2
=
2V
0
S
+
(V
1
+V
2
)
S
average speed =
totaltime
totaldistance
=
2V
0
S
+(
V
1
+V
2
S
)
S
average speed =
2V
0
+V
1
+V
2
2V
0
(V
1
+V
2
)
Similar questions