CAIE IGCSE Physics 1.3 Mass and Weight Topic Practice

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Covered syllabus points

1.3.1—Mass is a measure of the quantity of1.3.2—Weight is a gravitational force on an1.3.3—Gravitational field strength as force1.3.4—Weights (and masses) may be compared1.3.5—Describe, and use the concept of

Question 1

[Maximum number: 2]

In a double-decker bus there are two passenger compartments, one above the other.

A bus is travelling along a straight road. The bus and the driver have a combined mass of 16000 kg when there are no passengers in it. The bus has 73 passengers. The average mass of each of the passengers is 65 kg .

Calculate the total mass of the bus, the driver and the 73 passengers.

mass =

Question 2

[Maximum number: 1]

Fig. 2.1 shows an electric tumble dryer used to dry wet clothes.

Fig. 2.1

Fig. 2.1

The drum of the tumble dryer rotates, lifting up the wet clothes which then fall down through the hot air.

Name the force that causes the clothes to fall down.

Question 3

[Maximum number: 1]

An object is taken from the Earth to the Moon.
The acceleration of free fall is 9.8 m/s29.8 \mathrm{~m} / \mathrm{s}^{2} on the Earth and is 1.6 m/s21.6 \mathrm{~m} / \mathrm{s}^{2} on the Moon.
Which row describes the mass and the weight of the object on the Moon compared to on the Earth?

mass

weight

greater than on the Earth

same as on the Earth

less than on the Earth

same as on the Earth

same as on the Earth

greater than on the Earth

same as on the Earth

less than on the Earth

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