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As physics p1 MCQS YEARLY ONLY.
- Thread starter fatima 007
- Start date
Question 16 (June 2004)
A ball is thrown vertically upwards.
Neglecting air resistance, which statement is correct?
A The kinetic energy of the ball is greatest at the greatest height attained.
B By the principle of conservation of energy, the total energy of the ball is constant throughout its motion.
C By the principle of conservation of momentum, the momentum of the ball is constant
throughout its motion.
D The potential energy of the ball increases
Worked Solutions:
A is incorrect because vertical velocity is zero momentarily at the greatest height.
B is correct. Principle of conservation of energy is always applied.
C is incorrect because resultant force is not zero thus principle of conservation of momentum is not applied. The momentum of the ball system is constant throughout its motion for the principle to be applied.
D is incorrect because the potential energy of the ball increases uniformly with height NOT time during its ascent.
A ball is thrown vertically upwards.
Neglecting air resistance, which statement is correct?
A The kinetic energy of the ball is greatest at the greatest height attained.
B By the principle of conservation of energy, the total energy of the ball is constant throughout its motion.
C By the principle of conservation of momentum, the momentum of the ball is constant
throughout its motion.
D The potential energy of the ball increases
Worked Solutions:
A is incorrect because vertical velocity is zero momentarily at the greatest height.
B is correct. Principle of conservation of energy is always applied.
C is incorrect because resultant force is not zero thus principle of conservation of momentum is not applied. The momentum of the ball system is constant throughout its motion for the principle to be applied.
D is incorrect because the potential energy of the ball increases uniformly with height NOT time during its ascent.
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Hi can anyone post May/June 2011 P1 all answers and worked solution please? Pls help mee
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Hi all,
Referring to 9702 June 2014 Paper 12, Question 38, could anyone advise why option (A - Beta particle decays occur when a proton changes into a neutron) is incorrect? Thank you!
Referring to 9702 June 2014 Paper 12, Question 38, could anyone advise why option (A - Beta particle decays occur when a proton changes into a neutron) is incorrect? Thank you!
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An aeroplane can fly at a velocity X when moving through still air. When flying in wind the aeroplane’s velocity relative to the ground is Y. Which vector diagram shows the magnitude and direction of the wind velocity W? (9702/11/o/n/16) q3 .
Hiii can help me for this question ?
Hiii can help me for this question ?
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12 A box is shown resting on the ground. Newton’s third law implies that four forces of equal magnitude are involved. These forces are labelled P, Q, R and S. Forces P and Q act on the box. Forces R and S act on the Earth. For clarity, the forces are shown slightly separated. box ground P Q R S Which statement about the forces is correct?
A P is the equal and opposite force to Q and both are forces of contact.
B Q is the equal and opposite force to P and both are gravitational forces.
C R is the equal and opposite force to S and both are forces of contact.
D S is the equal and opposite force to Q and both are gravitational forces
Hi the answer is D but I answered A . Can someone explain why please?
9702/11/o/n/16 (Q12)
A P is the equal and opposite force to Q and both are forces of contact.
B Q is the equal and opposite force to P and both are gravitational forces.
C R is the equal and opposite force to S and both are forces of contact.
D S is the equal and opposite force to Q and both are gravitational forces
Hi the answer is D but I answered A . Can someone explain why please?
9702/11/o/n/16 (Q12)
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The diagram shows a long rope fixed at one end. The other end is moved up and down, setting up a stationary wave. vibration up and down fixed end X Y What is the phase difference between the oscillations at X and at Y?
A 0
B 45°
C 90°
D 135°
9702/11/o/n/16 (Q28)
this too?
Q36 In the circuit shown, the reading on the ammeter is zero. A R3 R4 R1 R2 The four resistors have different resistances R1, R2, R3 and R4. Which equation is correct?
A R1 – R3 = R2 – R4
B R1 × R3 = R2 × R4
C R1 – R4 = R2 – R3
D R1 × R4 = R2 × R3
Q35 What is a typical value for the order of magnitude of the resistivity of copper?
A 10–13Ω m
B 10–8Ω m
C 10–3Ω m
D 102Ω m
A 0
B 45°
C 90°
D 135°
9702/11/o/n/16 (Q28)
this too?
Q36 In the circuit shown, the reading on the ammeter is zero. A R3 R4 R1 R2 The four resistors have different resistances R1, R2, R3 and R4. Which equation is correct?
A R1 – R3 = R2 – R4
B R1 × R3 = R2 × R4
C R1 – R4 = R2 – R3
D R1 × R4 = R2 × R3
Q35 What is a typical value for the order of magnitude of the resistivity of copper?
A 10–13Ω m
B 10–8Ω m
C 10–3Ω m
D 102Ω m
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Dear fellow Physicists, could you all help to explain 9702/11 Oct/Nov 2017 Question 8, pls?
The three forces acting on a hot-air balloon that is moving vertically are its weight, the force due to the air resistance and the upthrust force.
The hot-air balloon descends vertically at constant speed. The force of air resistance on the balloon is F.
Which weight of material must be released from the balloon so that it ascends vertically at the same constant speed?
Ans: B) 2F
How is 2F calculated? Thank you!
The three forces acting on a hot-air balloon that is moving vertically are its weight, the force due to the air resistance and the upthrust force.
The hot-air balloon descends vertically at constant speed. The force of air resistance on the balloon is F.
Which weight of material must be released from the balloon so that it ascends vertically at the same constant speed?
Ans: B) 2F
How is 2F calculated? Thank you!
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Thank you!
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Dear fellow Physicists, could you help with 9702/13/Oct/Nov/2015 Question 19, pls?
Q19) A U-tube has one arm of area of cross-section A and the other of cross-section 4A. The tube contains water of density 1000 kg/m^3. The column of oil on top of the water in the left-hand arm is of length 30 cm. What is the difference in height x between the levels in the two arms of the tube?
Ans: A) 4.5 cm
Thank you in anticipation!
Q19) A U-tube has one arm of area of cross-section A and the other of cross-section 4A. The tube contains water of density 1000 kg/m^3. The column of oil on top of the water in the left-hand arm is of length 30 cm. What is the difference in height x between the levels in the two arms of the tube?
Ans: A) 4.5 cm
Thank you in anticipation!