Answer:
0.91 J
Explanation:
The kinetic energy of an object is given by
[tex]K=\frac{1}{2}mv^2[/tex]
where
m is the mass of the object
v is its speed
For the lemming in this problem, when he jumps, we have:
m = 0.0780 kg is the mass
v = 4.84 m/s is the speed
Substituting into the equation, we find:
[tex]K=\frac{1}{2}(0.0780)(4.84)^2=0.91 J[/tex]
