Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

A 2.0 kg object is lifted to a height of 5.0 m. What is its gravitational potential energy relative to the ground?

Gravitational potential energy is the energy stored when something is lifted in Earth's gravity. It depends on mass, gravity, and height, and is given by m g h. Here, m = 2.0 kg, g ≈ 9.8 m/s^2, and h = 5.0 m. Multiply g and h: 9.8 × 5.0 = 49.0. Then multiply by the mass: 2.0 × 49.0 = 98 J. So the gravitational potential energy relative to the ground is 98 joules. This energy would change if you altered the height, mass, or the gravitational strength.

Gravitational potential energy is the energy stored when something is lifted in Earth's gravity. It depends on mass, gravity, and height, and is given by m g h.

Here, m = 2.0 kg, g ≈ 9.8 m/s^2, and h = 5.0 m. Multiply g and h: 9.8 × 5.0 = 49.0. Then multiply by the mass: 2.0 × 49.0 = 98 J.

So the gravitational potential energy relative to the ground is 98 joules. This energy would change if you altered the height, mass, or the gravitational strength.