Energy -- Gravitational, Kinetic & Mechanical is one of 9 topics in the Grade 10 Technical Sciences CAPS syllabus, covered across 3 lessons on Study Vault. Below are real practice questions from this topic with full worked answers.
Sample practice questions
Easy
1. Which formula correctly gives gravitational potential energy?
Ep = mgh
Ep = 1/2mv^2
Ep = ma
Ep = Fv
Answer: Ep = mgh — Gravitational potential energy is calculated as Ep = mgh, where m is mass, g is gravitational acceleration, and h is height above a reference point.
Easy
2. What is the SI unit of gravitational potential energy?
Joule (J)
Newton (N)
Watt (W)
Kilogram (kg)
Answer: Joule (J) — The joule (J) is the SI unit of energy, including gravitational potential energy.
Medium
3. Calculate the gravitational potential energy, in J, of a 3 kg object raised 4 m above the ground, using g = 9,8 m.s^-2.
