A bird has a mass of 0.2 kg and is flying 10 m above the ground with a speed of 7 m/s. What is the total mechanical energy of the bird? Acceleration due to gravity is g = 9.8 m/s2.
It is 24.5
24.5
24.5 J !!
Total mechanical energy
= KE + PE
(assume PE at ground level = 0)
KE=(1/2)mv²
PE=mgh
h=height above ground in m
v=velocity in m/s