Mass

Question 1

What is mass?

Answer 1

The mass of an object is a measure of the amount of matter it contains. The mass of an object is constant. It is the same on Earth, on the Moon and in space.

Question 2

What is amount of matter?

Answer 2

An object’s mass is a measure of the amount of matter that it contains.

Question 3

What is inertia?

Answer 3

An object’s mass is also a measure of how difficult it is to change the object’s motion.

Question 4

True of false

An object with a high mass has more inertia than an object with a lower mass.

Answer 4

True

Question 5

What is the name of the measure of how difficult it is to change an object’s motion?

Answer 5

Inertia

Question 6

What’s the equation for weight

Answer 6

Weight = mass x gravitational field strength

Question 7

What are the units for gravitational field strength?

Answer 7

Newtons per kilogramme, N/kg

Question 8

How to find centre of mass in hanging objects?

Answer 8

If an object is hung from a string, it will hang with its centre of mass directly below the point that it is hung from.

Question 9

Centre of mass - all in a single point

Answer 9

The centre of mass is the point through which an object’s weight appears to act.

Question 10

Center of mass - toppling over

Answer 10

• An object will fall over if its centre of mass is outside its base.
• An object will fall off a surface if its centre of mass isn’t over the surface.

Question 11

G - kg

Answer 11

1000 g = 1 kg