Older MCQs might not have the typical A, B, C,
D
choices. They
have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such
combinations to the answer.
A
1, 2 and 3 are correct
B
1 and 2 only are correct
C
2 and 3 only are correct
D
1 only is correct
Recall and use the equation work done = force × distance moved in the direction of the force, W = Fd
Know that the Sun contains most of the mass of the Solar System and that the strength of the gravitational field at the surface of the Sun is greater than the strength of the gravitational field at the surface of the planets
Define gravitational field strength as force per unit mass; recall and use the equation gravitational field strength = weight / mass, g = W/m and know that this is equivalent to the acceleration of free fall