SECRET - · PDF fileMirror strip To avoid parallax error ... Name the physics principle that...
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4 THE REAL SECRET OF SUCCESS IS ENTHUSIASM Awesome physics is around you FORM
Transcript of SECRET - · PDF fileMirror strip To avoid parallax error ... Name the physics principle that...
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THE REAL SECRET
OF SUCCESS
IS ENTHUSIASM
A we s om e p h y s i c s i s a r o u n d y o u
FORM
LOVE PHYSICS 2
-PHYSICS SPM PAPER 2- SECTION A: (Structure)
Q 1 Knowledge, understanding & application. [4 m]
Q 2 Knowledge, understanding & application. [5 m]
Q 3 Knowledge, understanding & application. [6 m]
Q 4 Knowledge, understanding & application. [7 m]
Q 5 Knowledge, understanding, application & conceptualize
[8 m]
Q 6 Knowledge, understanding, application & conceptualize
[8 m]
Q 7 Knowledge, understanding, application & problem solving
[10 m]
Q 8 Knowledge, understanding, application & problem solving
[12 m]
SECTION B : (Essay)
Q 9 TOPIC - FORM 4
Knowledge understanding conceptualize
problem solving
[1 m] [4 m] [5 m]
[10 m]
Q 10 TOPIC - FORM 5
Knowledge understanding conceptualize
problem solving
[1 m] [4 m] [5 m]
[10 m]
SECTION C : (Essay)
Q 11 TOPIC - FORM 4
Knowledge Understanding
Application (quantitative) Decision making
[1 m] [4 m] [5 m]
[10 m]
Q 12 TOPIC - FORM 5
Knowledge Understanding
Application (quantitative) Decision making
[1 m] [4 m] [5 m]
[10 m]
LOVE PHYSICS 3
SECTION B (MODIFICATION) EXAMPLE
1. Diagram 1 shows an ammeter to measure an electric current.
Diagram 1
Using suitable concepts of physics, suggest and explain the necessary adaption to be made so that the ammeter can give readings that are more sensitive, consistent and accurate. State two precautionary steps that must be taken when taking the reading through the ammeter.
Modification/ Characteristics Explanation
Small size of scale Can detect smallest change in current flow
Mirror strip To avoid parallax error
Zero adjuster To avoid zero error To adjust the pointer at the zero mark
Lighter needle (pointer) Easy to detect current Sensitive to the change of current flow
Precautionary steps: - make sure our eye perpendicular to the scale of ammeter to avoid parallax error - switch off the circuit the after taking the reading to avoid over heating
2. Diagram 2 shows a loaded lorry.
Diagram 2
Explain the suitable loaded lorry which can carry liquid, such as petrol.
Modification/ Characteristics Explanation
Use ABS/air brake
Lorry does not stop immediately Increase the time for lorry to stop Lorry does not skid More friction with ABS Prevent wheel lock // wheel does not lock Prevent lorry spinning on wet surface
Use Two tyres // Double tyres // Many tyres //More than one
Can support heavy load Less damage to the road Low pressure coz surface area is high
The load of lorry should be divide into many small tanks
Does not shake easily To increase stability
Far gap distance between tractor and trailer
To prevent collisions between the trailer & the tractor To reduce force // velocity
Small belt behind lorry To discharge spark Safety reason to prevent from burning the petrol
The load must be tied So it will not fall of from the lorry
LOVE PHYSICS 4
EXERCISES 1. Diagram 1 shows a car.
Diagram 1
Using appropriate physics concept, explain the modifications needed to be done to the car so that it can be used as a safe racing car.
Modification/ Characteristics Explanation
2. Diagram 2 shows a motorbike racer.
Diagram 2
Suggest how to increase the safety for motorbike racer to reduce injuries or accident.
Modification/ Characteristics Explanation
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3. Diagram 3 shows a sailboat.
Diagram 3
Give suggestion to design a sailboat which can travel faster and smooth.
Modification/ Characteristics Explanation
LOVE PHYSICS 6
FULL FORMAT SECTION B
TRIAL NEGERI SARAWAK (DAERAH SRI AMAN) 2016
1. Diagram 1.1 shows a stationary pistol.
Diagram 1.1
Diagram 1.2 shows the pistol and bullet after the pistol has been fired.
Diagram 1.2
(a) (i) What is the meaning of momentum?
[1 mark]
(ii) State the total momentum of the pistol and bullet in Diagram 1.1. Using Diagram 1.1 and Diagram 1.2, compare the total momentum before and after the bullet is fired. Using Diagram 1.2, compare the magnitude and direction of the momentum of the bullet and pistol. Name the physics principle that can be applied to the motion of the bullet and pistol.
[5 marks]
(b) Using the principle of conservation momentum, explain the working principle of the rocket.
[4 marks]
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(c) Diagram 1.3 shows a structure of a jet engine for a small jet plane.
Diagram 1.3
You are required to give some suggestions to improve the design of the jet engine so that it can be used on a larger jet plane that travels at a higher speed. Using the knowledge on forces and motion and the properties of materials, explain the suggestions based on the aspects labeled on Diagram 1.3.
[10 marks]
TOTAL 20 marks
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NO. ANSWER
1. (a) (i) State the meaning of momentum
(ii) Comparison
(b)
(c) (i) Modification
Characteristics Reason
TOTAL 20 MARKS
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2. Diagram 2.1 shows the effect of a man falls from a high position to the ground without opening the parachute. Diagram 2.2 shows a man with the same mass falls from the same height when the parachute is open.
Diagram 2.1 Diagram 2.2
(a) (i) What is the meaning of free fall?
[1 mark]
(ii) Based on Diagram 2.1 and Diagram 2.2, compare the acceleration, the rate of change of momentum and the time of impact. Relate the rate of change of momentum with the time of impact to make a deduction on the relationship between the acceleration and the rate of change of momentum.
[5 marks]
(b) A hovercraft moves on a cushion of air which is trapped underneath it, as shown in Diagram 2.3. The trapped air reduces the friction. The hovercraft starts from rest and as it starts, the propeller produces a forward force until it reaches a constant velocity.
Diagram 2.3
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(i) Sketch a velocity-time graph to show the motion of hovercraft.
(ii) Explain why the hovercraft moves with constant velocity in terms of the force acting on it.
[4 marks]
(c) Diagram 2.4 shows a canoe.
Diagram 2.4
You are required to give some suggestions to design a canoe which can travel faster and safer. Using the knowledge on motion, forces and the properties of materials, explain the suggestions based on the following:
(i) the surface of the canoe
(ii) the shape of the canoe
(iii) the material of the canoe
(iv) the size of a peddle
(v) material used for peddle
[10 marks]
TOTAL 20 marks
LOVE PHYSICS 11
PAPER 3 SECTION A (ANALYS GRAPH)
TRIAL SBP 2007
1. Graph on Diagram 1.1 shows an experiment results to identify the relationship between force, F and acceleration, a, for an object which moves on a rough surface runaway.
Diagram 1.1
(a) On the graph, show and determine the value of F when a = 0.0 ms-2.
…………………………………………………………..………………………................
[2 marks]
(b) (i) Name the physical quantity F in (a).
..................................................................................................................................
[1 mark]
(ii) What will happen to, a , when F increases? ..................................................................................................................................
[1 mark]
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(c) Using the graph in Diagram 1.1: (i) Calculate the gradient of the graph, F against a.
Show on the graph how you determined the gradient.
[3 marks]
(ii) Determine the value of a when F =14.0 N.
Show on the graph how you determine the value. a = ………………………. [2 marks]
(iii) Write the relationship between F and a.
..................................................................................................................................
[1 mark]
(d) Name the physical quantity that represents the value of the gradient in (c) (i). ..................................................................................................................................
[1 mark]
(e) State one precaution that should be taken for this experiment. ..................................................................................................................................
[1 mark]
TOTAL 12 marks
LOVE PHYSICS 13
2. A student carries out an experiment to investigate the relationship between the period of oscillation of a loaded spring, T, and the mass of the load, m. The results of the experiment are shown in the graph of T2 against m in Diagram 2.1.
Diagram 2.1
(a) Based on the graph in Diagram 2.1: (i) State the relationship between T2 and m.
..................................................................................................................................
[1 mark]
(ii) Determine the value of m when the period of oscillation, T = 5 s. Show on the graph how you determine the value of m.
[2 marks]
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(iii) Determine the value of T2 when the m = 60 g. Show on the graph how you determine the value of T2.
[2 marks]
(b) (i) Calculate the gradient, h, of the graph. Show on the graph how you calculate the gradient.
[3 marks]
(ii) The spring constant, k, of a spring can be determined by the following formula:
h = 4π2k
where h is the gradient of the graph. Calculate the value of k, using π = 3.142. k = ………………………. [3 marks]
(c) State one precaution that can be taken to increases the accuracy of the
experiment. ..................................................................................................................................
[1 mark]
TOTAL 12 marks
