1) An object that has a mass of 15 kg on the Earth is taken to the Moon. The gravitational field strength on the Earth is 10 N/kg and on the Moon is 1.6 N/kg. What are the mass and the weight of the object on the Moon?

2) A solid triangle made from copper is cut into three pieces P, Q and R.

Which has the greatest density?

3) What is the correct SI unit for weight?

4) Consider the following statements:

(1) Inertia is a force in the direction of the motion.
(2) Inertia is the tendency of an object to maintain its motion.
(3) The more mass an object has, the greater its inertia.

Which of the statements(s) is/are correct?

5) A weighing scale is used to estimate the normal contact force exerted on the ground by a rectangular object.

When the object laid flat on the weighing scale, the normal contact force is calculated to be 100 N. How large would the normal contact force be if the object was stood upright on the scale?