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WorksheetsRevision 2
Total questions: 42
Worksheet time: 54mins
Which of the following base quantities has a correct SI unit?
A
B
C
D
Which quantity is a vector quantity?
Length
Volume
Velocity
Density
On April 2015, Japan Maglev train breaks the world record of the fastest train with the speed of
603kmh-1.
What is the speed in m s-1?
167.5 m s-1
1675 m s-1
10050 m s-1
21708 m s-1
Diagram 2 show a vernier caliper used to measure the length of a bolt nut.
What is the reading of the vernier caliper?
5.32 cm
5.52 cm
6.32 cm
6.52 cm
Which of the following is not a purpose of plotting graph in scientific investigation?
Giving a consistent measurement
Finding relationship between two variables
Find the values that out of range
Interpreting data
Marcell Jacobs runs in Olympic 2020 Games event of 100 m track. He runs from the starting line and finished the distance in 9.80 seconds.
Calculate his average velocity.
0.098m s-1
10.20 m s-1
96.3 m s-1
100 m s-1
Diagram 4 shows the velocity-time graph of a bus travelled from Kuala Lumpur to Ipoh.
Which of the following is correct?
Diagram 5 shows a man tightening the head of a hammer by hitting the bottom of the handle against a hard surface.
The head of the hammer is tightened, due to the concept of
power
inertia
elasticity
pressure
A bullet fired through a building structure made from wood planks. The building structures collapsed vertically to the ground.
The building collapsed vertically due to
inertia
decrease in velocity
change in acceleration
conservation of momentum
Which animal has the greatest momentum?
Diagram 7 shows a F1 racing car.
Why does the car’s design engineer use light composite materials for making the body of the car although its engine is powerful ?
Acceleration increases if mass decreases
A small mass produces a large force.
A large force produces a large inertia.
Composite material of small mass reduces cost.
Which one of the following physical quantities has the same unit as the unit of impulse?
Force
Momentum
Energy
Power
According to the Guinness Book of World Records, the fastest recorded baseball pitch was delivered by Nolan Ryan in 1974.
The pitch speed was at 45.0 m s-1. Determine the impulse required to give a 145 g baseball such a momentum
3.22 kg ms-1
6.525 kg ms-1
310 kg ms-1
6525 kg ms-1
Diagram 8 shows a box with a mass of 50 kg being drop from the helicopter.
At the moment before touching the ground, the velocity of the box is 10 ms-1. The box stops 3 second after touching the ground.
What is the magnitude of impulsive force acted on the box?
110.0 N
166.7 N
177.5 N
200.0 N
NASA's Langley Research Center has been experimenting with the use of air bags to smoothen the landings of crew exploration vehicles (CEV) on land.
What stopping time will be required in order to safely stop a 7250 kg CEV moving at 7.65 m s-1 with an average force of 426,000 N?
0.13 s
7.68 s
58.76 s
449.5 s
Which of the following item is not a safety feature installed in a vehicle?
Airbag
Sport rim
Seat belt
Arm rest
Diagram 11 shows a man worker wipe the floor using a mop during the badminton tournament.
The worker pushed the mop with 50 N force and the angle between the mop and the floor is 60°. What is the vertical component of force that acted on the floor?
F = 50 N
Fy = 50 sin 60°
Fx = 50 kos 60°
Fy = 50 kos 60°
Felix Baumgartner is the first person that jumps from the stratosphere layer with the high of 39 km from the earth surface.
Which displacement-time graph represents the motion of the Felix Baumgartner jumped?
Diagram 13 shows a 170 kg billboard hung by two identical cables and where all the forces are in equilibrium.
Calculate the tension of the cables if the angle θ is 60°.
1.7 x 102 N
8.5 x 102 N
9.81 x 102 N
1.96 x 103 N
Table 1 shows the results of an experiment to investigate the relationship between the force and extension of a piece of rubber band.
What is the value of x?.8
11.8
12.3
12.9
13.5
Which of the following shows that efficiency is 100%?
Input power is higher than output power
Output power is higher than input power.
Input power is equal to output power.
If the force is decrease while the surface area is kept constant, pressure exerted will …
increases
decreases
remains constant
Diagram 16 shows a cross section of swimming pool which has different depth.
What is the maximum pressure experienced at the bottom of the swimming pool?
[Density of water = 1000 kg m-3]
2.0 x 104 Pa
4.0 x 104 Pa
5.5 x 104 Pa
6.0 x 104 Pa
Which of the following factors will not affect the pressure in a liquid?
Gravitational field strength
Density of the liquid
Volume of the liquid
Depth of the liquid
Diagram 17 shows a simple barometer.
If the atmospheric pressure is 76 cm Hg, calculate the pressure of the trapped air in the glass tube.
11 cm Hg
65 cm Hg
76 cm Hg
141 cm Hg
When the gas in air-tight container is compressed, what will remains unchanged?
The gas pressure.
The number of particles.
The distance between particles.
The frequency of collisions between the particles and the walls.
Diagram 19 shows a hydraulic jack. If force of 5 N is exerted to small piston and the piston moves 5 cm, what is the distance of larger piston if the mass of the load is 100 kg?
0.025 cm
0.25 cm
2.50 cm
25.0 cm
Diagram 21 shows two identical balls floating on the surface of difference liquid P and Q. Which of the following statement is correct?
The density of liquid P = the density of liquid Q
The buoyant force acting in liquid P = the buoyant force acting in liquid Q
The density of liquid P < the density of liquid Q
The buoyant force acting in liquid P > the buoyant force acting in liquid Q
Diagram 23 shows a woman is struggling to hold her umbrella in a stormy weather.
Which statement is correct to explain the situation?
The wind pushes the umbrella upwards.
The buoyant force lift the umbrella upwards.
The action force of the wind above the umbrella produce a reaction force.
The difference in pressure above and below the umbrella produce lift force.
Diagram 24 shows a spinning ball is moving to the right against the stream of air.
Which direction A, B, C or D, the resultant force or the Magnus force is acting on the ball?
A
B
C
D
Hot coffee is poured into a cup. Which statement is correct about the heat flow when thermal equilibrium is reached?
Net heat flow is zero
Net heat flow is from the hot coffee to the cup
Heat flows only from the cup to the hot coffee
Heat flows only from the hot coffee to the cup
An uncalibrated mercury thermometer can be calibrated by measuring the length of mercury at freezing point and boiling point of water. Which methods are correct to determine the length of mercury at these two points?
A
B
C
D
Diagram 25 shows a graph of temperature, ϴ, against time, t, for three blocks X, Y and Z. The blocks are of the same mass and are heated at the same rate.
Which comparison between specific heat capacity X, Y and Z is correct?
cx < cy < cz
cy < cz < cx
cx > cy > cz
cy > cz > cx
Diagram 26 shows the setting of apparatus used in an experiment. An 80 W immersion heater is put into the ice cubes in B and it is switched on.
After 4 minutes, the mass of the water in beaker A is 78 g. What is the mass of the water in beaker B?
[Specific latent heat of fusion of ice = 3.36 × 105 J kg−1]
104.0 g
130.0 g
135.1 g
213.1 g
What occurs during the melting of ice?
Heat is absorbed by the ice
The kinetic energy of the water molecules decreases
The temperature of the ice increases
The bonding force between the water molecules increases
Steam at temperature of 100°C is piped to 8 kg of water at the temperature of 30°C until the water reaches the boiling point. The mass of the steam required is …
[Specific latent heat of vaporization of water = 2.26 × 106 J kg−1, specific heat capacity of water = 4.2 × 103 J kg−1°C−1]
0.48 kg
0.52 kg
0.96 kg
1.04 kg
Diagram 28 shows a pump connected to a Bourdon gauge. The reading on the Bourdon gauge before and after the piston is pushed in are shown below.
Which law explains the situation?
Boyle's law
Charles' law
Pressure law
At 30 oC the volume of fixed mass gas is 3 cm3. What is the temperature of the gas when the volume increase to 4 cm3 at constant pressure.
40 oC
45 oC
131 oC
404 oC
Diagram 29 shows a dented bottle before and after being placed in hot water.
Which of the following is correct?
Diagram 30 shows the pressure-temperature graph for a fixed mass of gas at constant volume.
Which statement is correct about the condition of the gas?
The pressure is zero at 0 oC
The gas molecules are stationary at -273 oC
The kinetic energy of the molecules is maximum at -273 oC
The gas pressure is inversely proportional to the temperature
Diagram 31 shows a student looking at a plane mirror.
The image observed by the student is
An object is placed 18 cm in front of a concave mirror which has a focus length 10 cm.
What are the characteristics of the image?
real, inverted and magnified
virtual, inverted and magnified
real, upright and diminished
virtual, upright and diminished
