- Home
- Standard 11
- Physics
2.Motion in Straight Line
medium
A car travels half the distance with constant velocity of $40\, kmph$ and the remaining half with a constant velocity of $60 \,kmph$. The average velocity of the car in $kmph$ is
A
$40$
B
$60$
C
$48$
D
$50$
(AIPMT-1990)
Solution
(c) ${v_{av}} = \frac{{2{v_1}{v_2}}}{{{v_1} + {v_2}}} = \frac{{2 \times 40 \times 60}}{{100}} = 48\,kmph.$
Standard 11
Physics
