1) In a laboratory on Earth, balances show that an object has a mass of 2 kg and a weight of 20 N.

The same balances and object are then taken to the Moon.

Are the mass and weight the same, or less than before?

2) 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?

3) 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?

4) 2022 S4 EOY P1 Q04

A brick is placed on a balance X and then on a balance Y.

What is measured by each balance?

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

Which has the greatest density?