Question

a car moving with velocity of 16m/s goes from city of jaipur to city of udaipur and comes back with a speed of 24m/s. calculate the average speed of the whole journey

Answer 1

Answer:

Let, the distance between Jaipur and Udaipur be x m.

Time taken in journey from Jaipur to Udaipur = t1 = x /16 s

Time taken in journey from Udaipur to Jaipur = t2 = x / 24 s

∴ Average Speed =

$\frac{total \: distance \: covered}{total \: time \: taken} \\ = \frac{2x}{( \frac{x}{16} + \frac{x}{24})} \\ = \frac{2x}{ (\frac{2x + 3x}{48})} \\ = \frac{48 \times 2x}{5x} \\ = \frac{96}{5} m {s}^{ - 1} \\ = 19.2 \: m {s}^{ - 1}$

Hope It Helps:)