Term I exam Physics grade 9

The diagram shows part of a micrometer screw gauge. What is the smallest reading that can be achieved using this micrometer screw gauge?

• 0.0001 mm

• 0.01 mm

• 0.1 mm

• 1 mm

A small, light ball is dropped from the top of a tall building.

Which graph shows how the speed of the ball changes with time?

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Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A runner runs 300 m at an average speed of 3.0 m / s. She then runs another 300 m at an average

speed of 6.0m / s.

What is her average speed for the total distance of 600 m?

• 2.0 m / s

• 4.0 m / s

• 4.5 m / s

• 8.0 m / s

A liquid has a volume of 0.040  $m^3$  
and a mass of 30 000 g.

What is the density of the liquid?

• 0.075 kg/ $m^3$  

• 7.5 kg/ $m^3$  

• 750 kg/ $m^3$  

• 7500 kg/ $m^3$  

A resultant force of 4.0N acts on an object of mass 0.50 kg for 3.0 seconds.

What is the change in velocity caused by this force?

• 4.0 m / s

• 6.0 m / s

• 12 m / s

• 24 m / s

Tags

NGSS.HS-PS2-1

Which quantities are both vectors?

• acceleration and force

• acceleration and pressure

• density and force

• density and pressure

Tags

NGSS.HS-PS2-1

A man is standing in a bus that is moving forwards. The bus stops suddenly, causing the man to fall over. Which property of the man resists the change in his motion and in which direction does the man

fall?

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Tags

NGSS.HS-PS2-1

A brick of mass 2.0kg is at rest. It falls to the ground through a distance of 5.0 m.The acceleration of free fall g is 10 m / $s^2$ . Air resistance can be ignored. At what speed does the brick hit the ground?

• 3.2 m / s

• 7.1 m / s

• 10 m / s

• 50 m / s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The diagrams show four table lamps resting on a table. The position of the centre of mass of each lamp is labelled X. Which lamp is the most stable?

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Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Diagram 1 shows a spring with its length indicated. Diagram 2 shows the same spring with a 20N load hung from it, and the new length of the spring. The spring obeys Hooke’s Law. Which graph is the extension-load graph for the spring?

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