Question

9. A car travels half the distance with a constant velocity of
40 m/s and the remaining half with a constant velocity of
60 m/s. The average velocity of the car in m/s is
(1) 42
(2) 50
(3) 48
(4) 45​

Answer 1

Explanation:

x = 40m/s

y = 60m/s

avg velocity = 2xy/x+y

= (2 × 40 × 60)/40 + 60

=( 2 × 40 × 60 )/100

= 2 × 4 × 6

= 48m/s