- Passengers in a bus are pushed forward when brakes are applied suddenly or backwards when a bus at rest takes off suddenly. Hence the fitting of seatbelts in vehicles.
- A coin placed on a cardboard on top of a glass tumbler drops into the tumbler when the cardboard is pulled sideways.
- Athletes run past the finish line of a race before they finally stop.
sharon kalunda answered the question on April 24, 2019 at 06:12
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Describe an experiment to determine acceleration due to gravity.
(Solved)
Describe an experiment to determine acceleration due to gravity.
Date posted:
April 24, 2019
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Answers (1)
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Describe horizontal projection.
(Solved)
Describe horizontal projection.
Date posted:
April 24, 2019
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Answers (1)
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Describe vertical projection.
(Solved)
Describe vertical projection.
Date posted:
April 24, 2019
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Answers (1)
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Describe free fall.
(Solved)
Describe free fall.
Date posted:
April 24, 2019
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Answers (1)
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Describe the following Velocity-time graphs:
(Solved)
Describe the following Velocity-time graphs:
Date posted:
April 24, 2019
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Answers (1)
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Explain the dangers of static charges
(Solved)
Explain the dangers of static charges
Date posted:
April 23, 2019
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Answers (1)
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In the figure below x=30cm, y=6cm, effort E=60N, A1=4cm2 and A2=12cm2.
(Solved)
In the figure below x=30cm, y=6cm, effort E=60N, A1=4cm2 and A2=12cm2.
Calculate:
a) The force F exerted on the liquid at A1.
b) The velocity ratio of the system.
c) The maximum load that can be raised by the system.
Date posted:
April 23, 2019
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Answers (1)
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A box of mass 30kg is pushed up an inclined plane of length 14m using a force of 130N as shown below:
(Solved)
A box of mass 30kg is pushed up an inclined plane of length 14m using a force of 130N as shown below:
If the track is inclined at an angle of 200, calculate:
a) The height of the platform.
b) Workdone by the force of 130N.
Date posted:
April 23, 2019
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Answers (1)
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Draw a flow chart to show the energy transformation in a hydroelectric power station:
(Solved)
Draw a flow chart to show the energy transformation in a hydroelectric power station:
Date posted:
April 23, 2019
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Answers (1)
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State the characteristics energy:
(Solved)
State the characteristics energy:
Date posted:
April 23, 2019
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Answers (1)
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The mass of a density bottle is 20g when empty and 45g when full of water. When full of mercury, its mass is 360g. Calculate...
(Solved)
The mass of a density bottle is 20g when empty and 45g when full of water. When full of mercury, its mass is 360g. Calculate the density of mercury.
Date posted:
April 23, 2019
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Answers (1)
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Derive the three equations of linear motion.
(Solved)
Derive the three equations of linear motion.
Date posted:
April 23, 2019
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Answers (1)
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The figure below represents part of a tape pulled through a ticker-timer by a trolley moving down an inclined plane. If the frequency of the...
(Solved)
The figure below represents part of a tape pulled through a ticker-timer by a trolley moving down an inclined plane. If the frequency of the ticker-timer is 50Hz, calculate the acceleration of the trolley.
Date posted:
April 23, 2019
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Answers (1)
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A paper tape was attached to a moving trolley and allowed to run through a ticker-timer. The figure below shows a section of the tape.
(Solved)
A paper tape was attached to a moving trolley and allowed to run through a ticker-timer. The figure below shows a section of the tape.
If the frequency of the ticker-timer is 20Hz, determine:
a) The velocity between AB and CD.
b) The acceleration of the trolley.
Date posted:
April 23, 2019
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Answers (1)
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A body is made to change its velocity from 20m/s to 36m/s in 0.1s. What is the acceleration produced?
(Solved)
A body is made to change its velocity from 20m/s to 36m/s in 0.1s. What is the acceleration produced?
Date posted:
April 23, 2019
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Answers (1)
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Outline the three common types of motion:
(Solved)
Outline the three common types of motion:
Date posted:
April 23, 2019
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Answers (1)
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A machine with a velocity ratio of 30 moves a load of 300N when an effort of 200N is applied. Calculate the efficiency of the...
(Solved)
A machine with a velocity ratio of 30 moves a load of 300N when an effort of 200N is applied. Calculate the efficiency of the machine.
Date posted:
April 22, 2019
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Answers (1)
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Explain why a man using a parachute falls through air slowly while a stone falls through air very fast
(Solved)
Explain why a man using a parachute falls through air slowly while a stone falls through air very fast.
Date posted:
April 22, 2019
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Answers (1)
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A man makes a deeper marks while walking on a soft ground in a high heeled shoes than in a flat shoes. Explain
(Solved)
A man makes a deeper marks while walking on a soft ground in a high heeled shoes than in a flat shoes. Explain
Date posted:
April 22, 2019
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Answers (1)
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Explain how temperature affects Brownian motion
(Solved)
Explain how temperature affects Brownian motion.
Date posted:
April 18, 2019
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Answers (1)