A car travelling on a straight track moves with a uniform speed V, for half of the time and with a unifor
speed V, for rest of the time. The average speed is
V. + V
a) VV,
b)
2
V
V
1
+
d) 2
Answers
Answered by
0
Answer:
Let each time interval be t.
Displacement covered in first time interval, d
1
=v
1
t
Displacement covered in second time interval, d
2
=v
2
t
Total displacement d=d
1
+d
2
=(v
1
+v
2
)t
Total time t=t+t=2t
Average velocity V
avg
=
2t
(v
1
+v
2
)t
=
2
v
1
+v
2
Similar questions