Question

find the base quantities involved in each of the following derived quantities : (a)speed ,(b)volume,(c)force,(d)work​

Answer 1

(a) Speed

Speed = distance/time = length/ time

So base quantities involved in speed are :

• Length

• Time

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(b) Volume

Volume = length × breadth × height

As width, and height basically indicate the lengths along the particular direction.

So base quantity involved in volume is :

• Length

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(c) Force

F = ma

·.· a = vf-vi /t

·.· v = d/ t

So base quantities involved in force are :

• Mass

• Length

• Time

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(d) Work

W = F × d

·.· F= ma

·.· a = vf-vi /t

·.· v = d/ t

So base quantities involved in Work are :

• Mass

• Length

• Time

Answer 2

1. Speed: distance (m) and time (s) are used (m/s)

2. weight or mass (kg) and length (m³) are used (Kg/m³)

3. Force = mass (Kg) and acceleration are used (Kg m/s²)

4. Work = mass (Kg) , acceleration (m/s²) and distance (m) are used (Kg m²/s²)

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