A0.0780 kg lemming runs off a 5.36 m high cliff at 4.84 m/s. what is its kinetic energy(ke) when it jumps me

0.91 J

Explanation:

The kinetic energy of an object is given by

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:

no. dot product   =0 when vecs at right angles