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15
×
State Newton’s Second Law of Motion.
The force on an object is equal to the rate of change of momentum / F = ma.
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15
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From a velocity-time graph, what does the area under the graph represent?
Displacement
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15
×
A student measures a time interval of 2.5 minutes. Express this in seconds.
150 s
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15
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A block has mass 200 g and volume 50 cm³. Find its density in g/cm³.
200 ÷ 50 = 4 g/cm³
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15
×
State the SI unit of mass.
kilogram (kg)
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15
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Define speed.
Distance travelled per unit time.
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eraser
Reset score!
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rocket
Go to first place!
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fairy
Take points!
5
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25
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banana
Go to last place!
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15
×
How do you determine the volume of an irregular solid object?
Use displacement method (measure volume of water displaced in measuring cylinder).
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15
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Differentiate between mass and weight.
Mass is the amount of matter in an object (kg, scalar), weight is the force of gravity on the object (N, vector).
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15
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A ball increases its velocity from 4 m/s to 10 m/s in 3 s. Find acceleration.
(10 – 4) ÷ 3 = 2 m/s²
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15
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Define vector quantity. Give one example.
A physical quantity that has both magnitude and direction, e.g. velocity / displacement / force
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15
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From a velocity-time graph, what does the slope represent?
Acceleration
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15
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Convert your answer in Q7 to SI unit (kg/m³).
4000 kg/m³
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banana
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seesaw
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fairy
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25
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thief
Give points!
5
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20
25
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trap
No points!
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magnet
Take 20 points!
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gift
Win 20 points!
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banana
Go to last place!
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15
×
Name one instrument used to measure length accurately.
Vernier caliper / micrometer screw gauge
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