1. a) Define vector and scalar quantities.
b) Classify the following quantiles into two groups, scalars and vectors. Momentum distance time velocity acceleration power force and energy.
2. Using Newton’s Laws of motion and given the information below answer the following questions:
A shuttle is launched into space The shuttle produces a lift force of approximately 10,000N. The resistive force on it is 7,000N. Draw a diagram to represent this.
Once the shuttle has escaped the atmosphere, it jettisons its rockets. Explain why the shuttle will carry on moving with a constant velocity at this stage, even though it is no longer generating any force.
Explain how you reach your answer and which of Newton’s Laws you use.
3. a) Identify and define K.E. and G.P.E and explain the conservation of energy
Which of the following has more kinetic energy:
A car of mass 500 kg moving at 15 m s-1 or a motorcycle of mass 250 kg moving at 30 m s-1? Show the calculations you used to answer the question.
What is the potential energy of a 10kg mass:
i) 100m above the surface of the earth? ii) 300m above the surface of the earth?
A constant force of 2kN pulls a crate along a level floor a distance of 10m in 50s. What is the power used?
If a 2Kg mass is held 10m above the ground. What is the potential energy? If the 2Kg mass is dropped, what is the velocity of the mass just before it hits the ground?
Word Count (Approximately)
1.a) 50 words
1.b) 10 words
2.b) 50 words
3.a) 100 words
Show how you complete your calculations, this is not included in the word count.
NOTE:
Completion notes:
When completing calculations remember:
show your method of working out
include the unit of measurement
be accurate with the mathematics
use SI units
-use standard form in calculations when necessary
TAQ 2:
Assessment criteria 2.1 2.2
Draw and label a transverse wave with the following terms amplitude, wavelength, peak and trough. Explain these terms including frequency and time period.
Use Snell’s Law to solve this problem, show how you reach your answer.
Light travels from water into fibre optic cable with an angle of refraction (θr) of 21.5 °. What is the angle of incidence (θi)?
The refractive indices of the materials are as follows:
Refractive index of fibre optic cable = 1.6
Refractive index of water: = 1.33
Even though air and glass have different refractive indices, explain one situation when the light ray would not change direction when passing from air into glass.
