A car accelerates from 10 m/s to 40 m/s in 6 seconds. What is its acceleration?
5 m/s² ((40 - 10) ÷ 6)
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25
A metal block has a mass of 500 g and a volume of 0.1 m³. What is its density in kg/m³?
5 kg/m³
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25
Multiply (2 × 10³) by (3 × 10²).
6 × 10⁵
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25
If oil floats on water, is its density more or less than 1 g/cm³?
Less than 1 g/cm³.
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20
If a car moves 100 meters north in 5 seconds, what is its velocity?
Velocity = 100 m / 5 s = 20 m/s north
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25
What is relative error?
Relative error is the ratio of the absolute error to the actual measurement, usually expressed as a percentage.
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15
How does the vertical velocity of a projectile change as it moves upward and downward?
The vertical velocity decreases as the projectile moves upward, becomes zero at the peak, and then increases (in the opposite direction) as it falls downward.
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25
A cyclist travels at 12 m/s for 30 seconds. What distance do they cover?
360 meters
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15
How do you calculate velocity?
Velocity = Displacement / Time
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25
How many milliseconds are in 3 seconds?;
3000 milliseconds
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15
What is the SI unit of velocity?
Metres per second (m/s).
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15
What is the definition of a metre in the SI system?
A metre is the distance that light travels in a vacuum in 1/299,792,458 seconds. This redefinition uses a universal constant (the speed of light).
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25
What is a good relative error percentage in scientific experiments?;
Typically, a relative error below 5% is considered acceptable.
