# Module

## Module: Space

### Question 1

Section I Question 1 - 2002 HSC

Set of arrows showing the direction of the acceleration of a golf ball at two points in its trajectory.

### Question 1

Written Paper Section I Question 1 - 2001 HSC

Weight of a person at Earth’s surface, given the person's mass.

### Question 2

Section I Question 2 - 2002 HSC

Effects noted by a stationary observer of a spaceship travelling at a very high speed.

### Question 2

Written Paper Section I Question 2 - 2001 HSC

Direction of force on a positively charged particle moving at a specified velocity in a magnetic field, as shown in a diagram.

### Question 3

Section I Question 3 - 2002 HSC

Calculation of a person’s weight on the surface of Mercury, given the acceleration due to gravity (ms-2) on the surfaces of Earth and Mercury and the person's weight (N) on the surface of Earth.

### Question 4

Section I Question 4 - 2002 HSC

Point at which the occupant of a car on a roller-coaster ride would experience maximum ‘g force’.

### Question 5

Section I Question 5 - 2002 HSC

Calculation of the orbital period of a planet orbiting a distant star, given the orbital period of a second planet orbiting the same star and the mass, orbital radius, planetary radius and length of day for both planets.

### Question 5

Written Paper Section I Question 5 - 2001 HSC

Time interval with the greatest acceleration of a rocket, given a graph of forces experienced by an astronaut during a launch into a stable orbit.

### Question 7

Written Paper Section I Question 7 - 2001 HSC

Acceleration of an object thrown vertically upward, given its mass, initial speed and maximum height.

### Question 13

Written Paper Section I Question 13 - 2001 HSC

Conditions of force and acceleration of a rocket car moving on a straight horizontal track, if half of the initial mass of the rocket car is propellant and the propellant is consumed at a constant rate and ejected at a constant nozzle velocity.

### Question 15

Written Paper Section I Question 15 - 2001 HSC

Graph of Velocity vs Time best representing the motion of a ball that bounces several times.

### Question 16-17

Written Paper Section I Question 16-17 - 2001 HSC

Q16. Name the effect demonstrated by the observation that high-speed muons have a lifetime of 5.0 microseconds but, when brought to rest, their lifetime is 2.2 microseconds; calculate the velocity of the muons as they leave the accelerator. Q17. Using a graph of velocity and time, compare the acceleration of a rocket launched vertically at t = 20s with its acceleration at t = 100s; account for the shape of the graph over the range of time shown.

### Question 18-20

Written Paper Section I Question 18-20 - 2001 HSC

Q18. Calculate the force acting on a projectile when it is at its maximum height after being fired from a cannon and the time it takes to reach the ground from its maximum height. Describe and compare the vertical forces at the object's maximum height with the forces on an identical object attached to a mechanical arm and moved at a constant speed in a vertical half-circle. Q19. Outline how Einstein’s Theory of Special Relativity explains the result of the Michelson–Morley experiment. Q20. Explain why transformers are used in an a.c. network between the generating stations and the final consumer.

### Question 19

Section I Question 19 - 2002 HSC

Using one of Einstein’s famous thought experiments in which a train passes through a station at 60% of the speed of light; (a) Compare the velocity of a light beam as seen by a passenger on the train and a rail worker standing on the station platform. (b) Calculate the length of the carriage as observed by the railworker on the station platform if the passenger calculates the length as 22 m.

### Question 21

Section I Question 21 - 2002 HSC

(a) If a cannon with a length of 215 m fires a capsule that achieves a speed of 1.06 × 104 ms−1 as it leaves the cannon, calculate the magnitude of the acceleration required. (b) Explain why this method is unsuitable for sending a living person to the moon.