The equation used to find the gravitational potential energy of an object near the Earth's surface can be written as:
Ep=h×Y×Z E_p = h \times Y \times Z Ep=h×Y×Zwhere Ep E_p\,Ep is the gravitational potential energy and h h\,h is the height of the object.
Which of the following correctly identifies the quantities Y Y\,Y and ZZZ?
Y=massY = \text{mass}Y=mass, Z=gravitational field strengthZ = \text{gravitational field strength}Z=gravitational field strength
Y=weightY = \text{weight}Y=weight, Z=heightZ = \text{height}Z=height
Y=massY = \text{mass}Y=mass, Z=velocityZ = \text{velocity}Z=velocity
Y=densityY = \text{density}Y=density, Z=volumeZ = \text{volume}Z=volume
229 exam-style questions on CIE IGCSE Physics 1.7.1a Energy stores and energy transfers. Each one has a worked solution and a mark scheme showing where the marks go.