Question

Jack and Jill are both traveling straight north. Jack is walking at 4 mph, while Jill is riding a bicycle at 12 mph. Regarding their speeds and velocities:__________

Answer 1

Answer: Average speed is 6 mph and average velocity is 6 mph in north direction.

Step-by-step explanation:

Since we have given that

Speed at which Jack is walking = 4 mph

Speed at which Jill is riding a bicycle = 12 mph

So, the average speed would be

$\dfrac{2xy}{x+y}\\\\=\dfrac{2\times 4\times 12}{4+12}\\\\=\dfrac{96}{16}\\\\=6\ mph$

and average velocity would be

6 mph in the north direction.

Hence, average speed is 6 mph and average velocity is 6 mph in north direction.