Answer:
Power = 79.38 W
Explanation:
Given Data:
Mass of the snake head = m = 180 g = 0.18 kg
Velocity of snake = v = 21 m/s
Time = t = 0.5 sec
Required:
Average Power = P = ?
Solution
Power = work done / time
Work done = W = change in Kinetic Energy = [tex]1/2m(Vf^2 - Vi^2)[/tex]
Since Vi = zero as snake was at rest at initial stage, thus
Work done = [tex]W=1/2 (mv^2)[/tex]
Substituting this value in power equation
[tex]P=\frac{mv^2}{2t}\\=\frac{0.18*21^2}{2*0.5}\\ P=79.38 W[/tex]
