Physics I - For Class IX (Science) - Target Papers 2026 - By Sir Sajjad Akber Chandio

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Class IX (Science)
Physics I

Sir Sajjad Akber Chandio

• Scientific reasons
• Must To Follow Applications Of Physics
• Derive the equation:
• Questions
• Definitions
• Differences
• Numerical

Target paper 2026

Scientific Reasons:
Q) Give the scientific reason of the followings:

1. Which is more accurate Vernier Caliper or a Screw Gauge and Why?
2. Why gravity is taken negative for an object moving in upward direction?
3. Why it is dangerous to jump from a moving bus.
4. Why do we feel pushed outward while a car turns on a curved road?
5. Why it is easier to walk wearing flat slippers than the high heels sandals?
6. How is the see-saw balanced?
7. Why tungsten melts at a much higher temperature than iron?
8. What is the force that cause the moon to orbit around the Earth?
9. Why we cannot tell the temperature of the body by touching it?
10. Why does the temperature not increase when ice is heated at 0 ℃?
11. Why does the temperature not increase when ice is heated at 100 ℃?
12. It is dangerous to jump from fast moving vehicle.
13. Why are gap left between two adjacent rails?
14. Why it is difficult to stop a loaded trucks / when an unloaded truck?

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Must To Follow Applications Of Physics:

1. Application of Boyles law
2. Application of Pascal law ( hydraulic machine)
3. Application of Centripetal force and Centrifugal force
4. Application of Thermal expansion ( bimetallic thermostat)

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Q) Derive the equation:

1. 2aS= V_f² – V_i²
2. Δp = ft
3. V_f = V_i + at
4. S = V_it + ½ at²

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Questions
Q.1) Define Physics and describe importance of physics in daily life. Also define any five branches of physics.
Q.2) Chart S.I and Derive Unit, Prefix value, Significant figure.
Q.3) Describe Head to tail rule.
Q.4) What is equilibrium? Describe the state of equilibrium?
Q.5) Define Energy. Write down difference between Kinetic energy vs Potential energy. Also derive K.E = ½ mv² and P.E = mgh
Q.6) State Laws:

1. Newton’s 1^st, 2^nd and 3^rd law of motion
2. Law of Principle of Momentum.
3. Law of conservation of energy
4. Hook’s Law + Properties Spring
5. Principle of moment
6. Newton’s Law of gravitation in the motion satellite

Q.7) State Newton Law of Gravitation derive the equation F = G m₁m₂ / r²
Q.8) Define Resolution of vector and describe rectangular components?
Q.9) State Pascal law with application use in our life?
Q.10) State and explain Boyle’s law. Also describe application of Boyle’s law in daily life.
Q.11) Define centripetal force derives formula with factor of centripetal force.
Q.12) Define Motion and its types
Q.13) Define Friction? Write down two advantages, disadvantages and methods of reducing friction?
Q.14) Define linear thermal expansion and Volumetric thermal expansion
Q.15) What is artificial satellite and Natural satellite? Mention types and uses of artificial satellite. Prove that the velocity of satellite orbiting around the earth is given.

𝑣 = √𝑔ℎ (𝑅𝐸 + ℎ)

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Q.16) Define Following:

1. Force
2. Acceleration and Negative acceleration
3. Torque
4. Center of gravity
5. Kinematics
6. Couple
7. Power + derivation
8. Density
9. Pressure with factors
10. Work
11. Thermometer + scale
12. Momentum
13. Uniform velocity and speed
14. Thermal expansion with application
15. Geostationary

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Q.17) Write down 3 differences between each of followings:-
1) Speed vs Velocity
2) Mass vs weight
3) Heat and Temperature
4) g vs G
5) Scalar and Vector quantities
6) Distance and displacement
7) Renewable and nonrenewable energy

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NUMERICAL

1) A motorcycle is moving with a velocity of 72 km/hr on a straight road, when the brakes are applied the motorcycle comes to rest after covering a distance of 10 meters. Calculate its acceleration.
2) A car moving with a uniform acceleration attains a speed of 36 km/hr in 2 minutes; Find the acceleration of the car.
3) A stone is dropped from a tower. It reaches the ground in 5 seconds. Calculate the height of the tower.
4) A car is moving on a straight road at a speed of 5 m/s. It is accelerated at 3 m/s². Calculate its velocity after 4 seconds.
5) The velocity of a car increases by an acceleration of 2 m/s² and become 20 m/s in 5 second. Find the initial velocity of the car.
6) A car is moving with uniform acceleration and attains the velocity of 10⁸ kmh^-1 in 5 minutes. Find acceleration of the car.
7) A ball is dropped from a tower; it reaches the ground in 10 seconds. Calculate the height of the tower. (g= 10 m/s²)
8) A car starting from rest attains a velocity of 20 ms^-1 in 5 seconds. Find the distance covered by the car.
9) A ball is dropped from a height of 122.5 m. How much time will it take to reach the ground?
10) A body of 20 Kg is moving with a speed of 15 m/s. Find its momentum.
11) A gun of mass 10 kg fires a bullet of mass 0.05 kg with a speed of 200 m/s. Calculate velocity of recoil of the gun.
12) Calculate the pressure at a depth of 3m in swimming pool. (density of water = 1000 kgm^-3)
13) The mass of an object is 60 kg, find its weight on Earth and Mars assume the acceleration due to gravity on earth is 9.8 m/s² on Mars = 3.7 m/s²
14) A bus start from rest and travels along a straight path is velocity become 15 m/s in 5 seconds. Calculate acceleration of the bus.
15) What will be the energy of a boy of mass 50 kg driving a bike with velocity of 2 m/s
16) How much heat is required to boil 3 kg water which is initially 25 °C.
17) A force of 50 N acts on a body. If the moment arm is 0.5 m find the value of the Torque.
18) In a hydraulic lift system, what must be the surface area of a piston if a pressure of 3300 Pa is used to provide an upward force of 2200 N?
19) Calculate the mass of a solid iron wrecking ball of radius 18 cm, if the density of iron is 7.8gm/cm³.
20) The pressure on 9cm³ of oxygen gas doubled at fixed. What will its volume become?

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For Physics Complete Notes For Class IX CLICK HERE