Question

Jack and Jill exercise in a 25.0 m long swimming pool. Jack swims 9 lengths of the pool in 147.9 s (2 min and 27.9 s), whereas Jill, the faster swimmer, covers 10 lengths in the same time interval. Find the average velocity and average speed of cach swimmer. Jack's average velocity: m/s Jack's average speed: m/s Jill's average velocity: m/s Jill's average speed: m/s

Answer 1

Jack's average velocity, $v = \frac{25.0}{147.9} = 0.169 m/s$

Jack's average speed, $v = \frac{9*25.0}{147.9} = 1.52m/s$

Jill's average velocity, $v = \frac{0}{147.9} = 0$

Jill's average speed, $v = \frac{10*25.0}{147.9} = 1.69m/s$ ​​​​​​​