Question

A bird flying north at 15m/s is rest for 5seconds and again flys south at 55m/s for 10 seconds. For the whole trip find average speed,average velocity and average accumulation​

Answer 1

Average speed=
$average \: speed \: = distance \div time$
$speed = 75 + 550 \div 15$
$speed = 625 \div 15$
speed=41.7 m/s.
displacement=475m.
$velocity = 475 \div 15$

velocity=31.7 m/s.