From graph, = 80 m/s
johnmulu answered the question on May 16, 2017 at 05:22
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Explain the nature of the curves and state why they are different.
Date posted: May 16, 2017. Answers (1)
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Date posted: May 15, 2017. Answers (1)
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Date posted: May 15, 2017. Answers (1)
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Figure 9 shows a velocity-time graph for the motion of a body of mass 2 kg.
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(i) Displacement of the body after 8 seconds
(ii) Acceleration after point B;
(iii) Force acting on the body in part (a) (ii).
Date posted: May 15, 2017. Answers (1)
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(a) B and C;
(b) C and D;
Date posted: May 15, 2017. Answers (1)
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(i) OA
(ii) AB
Date posted: May 15, 2017. Answers (1)
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Date posted: May 15, 2017. Answers (1)
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Figure 9 shows a velocity-time graph for the motion of a certain body.
Describe the motion of the body in the region;
(i) OA; (ii) AB; (iii) BC;
Date posted: May 15, 2017. Answers (1)
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The graph below shows how the velocity varies with time for a body thrown vertically upwards.
Determine the total distance moved by the body.
Date posted: May 15, 2017. Answers (1)
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Figure 9 shows a speed-time graph for the journey of a motor car.
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Date posted: May 15, 2017. Answers (1)
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Date posted: May 15, 2017. Answers (1)
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Explain how air is drawn into the burner when the gas tap is opened.
Date posted: May 15, 2017. Answers (1)
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Figure 5 shows parts A, B and C of a glass tube.
State with a reason the part of the tube in which the pressure will be lowest when air is blown through the tube from A towards C.
Date posted: May 15, 2017. Answers (1)
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Figure 7 shows part of a petrol engine, in which air flowing under atmospheric pressure passes into a constriction, where it mixes with petrol. The mixture then flows into a combustion cylinder.
Explain what causes the petrol to move from the petrol chamber to the air steam in the constriction when the piston is moved downwards.
Date posted: May 15, 2017. Answers (1)
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Explain this observation.
Date posted: May 15, 2017. Answers (1)
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Figure 6 shows two inflated balloons hanging vertically on light threads.
When a stream of air is blown in the space between the balloons, they are observed to move towards each other. Explain this observation
Date posted: May 15, 2017. Answers (1)
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Date posted: May 15, 2017. Answers (1)
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Figure 2 shows a tube of varying cross sectional area. V1, V2, V3 and V4 represent the speed of water as it flows steadily through the sections of the tube
Arrange the speed V1, V2, V3 and V4 in decreasing order starting with the highest
Date posted: April 19, 2017. Answers (1)
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Figure 19 shows a pith ball placed in a flask. When a jet of air is blown over the mouth of the flask as shown, the pith ball is observed to rise from bottom.
Explain this observation
Date posted: April 19, 2017. Answers (1)