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