Year 11 Physics

Module 1

100

An object under the action of several forces will have zero acceleration when...

Vector sum of all forces is equal to zero

200

A human travels 10 m North and 20 m East. What is their displacement?

22.36 m

300

A force of 60 N pulls an object at 30 degrees. Find the magnitude of the x and y components. 

x = 52, y = 30

400

A 200 m train travels at 72km/h. How long will it take to pass a stationary train that is 250 m long?

12.5 s

500

Car A and Car B are at rest, before traveling for 10 s. Car A accelerates at 4.0 m/s/s, while Car B accelerates at 3.0 m/s/s. Calculate the distance between at the end. 

350 m

Module 2

100

When a train suddenly stops, the passengers continue moving forwards due to...

Inertia

200

What happens to momentum and total energy in an elastic collision?

They are conserved

300

A cannon moves backwards after firing due to...

Newton's 3rd Law of Motion

400

A mass of 5 kg moves with a velocity of 2 m/s. Calculate its momentum. 

20 kgm/s

500

A person catches a 150g ball moving at 20m/s. If the catch happens over 0.1s, calculate the force felt on the hand. 

30 N

Module 3

100

True or false: The Doppler Effect is applicable to sound waves only

False

200

Find the wavelength of a sound wave with a frequency of 500 Hz and a velocity of 350 m/s.

70.0 cm

300

Complete destruction between two sound waves occurs when...

They have the same amplitude and frequency but are opposite in phase.

400

How much energy is required to melt 5 kg of ice?
(L = 336 J/g)

1.68 MJ

500

The refractive index of water is 1.33. Calculate the critical angle. 

48.75 degrees

Module 4

100

What will happen to the conductivity of an object if it is halved in length?

Nothing

200

How is resistance calculate in a parallel circuit?

1/R_parallel = 1/R₁ + 1/R₂ ... + 1/R_N

300

Two parallel wires run in opposite directions. Draw a diagram representing the magnetic fields around them.

 

400

A current of 5 A passes through a 10 Ohm resistor over 4 minutes. How many coloumbs pass through it in this time?

1200 C

500

Calculate the strenght of magnetic field at a point 5 cm away from a wire if the current is 10 A.

4.0 x 10^-5 T

Class

100

Who is first on the roll?

Arjun

200

Who has the second longest surname?

Shylira

300

Who is the youngest in the class?

Fleur

400

Whose birthday is next?

Siphesihle

500

Half the class has a birthday in the same month. Which month is it? Name the students.

Shylira, Eleanor, Amosa, Fleur