A 0.0780 kg lemming runs off a 5.36 m high cliff at 4.84 m/s. What
is its potential energy (PE) when it
jumps?

4.097 Joules

Explanation:

Applying,

P.E = mgh Equation 1

Where P.E = Potential energy, m = lemming mass, h = height, g = acceleration due to gravity

From the question,

Given: m = 0.0780 kg, h = 5.36 m

Constant: g = 9.8 m/s²

Substitute these values into equation 1

P.E = 0.0780(9.8)(5.36)

P.E = 4.097 Joules.

Hence the potential energy is 4.097 Joules