Pick out the wrong statement about retardation: - Vidyadip

MCQ

Pick out the wrong statement about retardation:

A
Retardation is negative acceleration
B
Retardation is rate of decrease of velocity with time
C
SI unit of retardation is ms⁻²
D
Retardation is a scalar quantity

✓

Answer

Retardation is a scalar quantity

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The density of water is 1000kg/m³ and the density of copper is 8900kg/m³. Which of the following statements is incorrect?

$=\frac{\text{The density of a certain volume of copper}}{\text{The density of the same volume of water}}=8.9$
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