A polar bear weighing 800 kg jumps over an obstacle 1.5 m high.

A polar bear weighing 800 kg jumps over an obstacle 1.5 m high. Determine the potential energy of the bear at the moment of overcoming the obstacle.

Initial data: m (mass of a polar bear) = 800 kg; h (obstacle height) = 1.5 m.

Reference data: g (acceleration due to gravity) ≈ 10 m / s2.

The potential energy of the polar bear from the moment of overcoming the obstacle is determined by the formula: En = m * g * h.

Calculation: Ep = 800 * 10 * 1.5 = 12000 J (12 kJ).

Answer: At the moment of overcoming the obstacle, the potential energy of the polar bear is 12 kJ.