Question

5
A quantity has a value of -4 m/s2 it
may be the
(1 Point)
Speed of a particle
Position of a particle
Retardation of the particle
Velocity of the particle​

Answer 1

Retardation of the particle

Explanation:

As the velocity of an object increases, its acceleration also increases. Which means that it will have a positive sign.

Opposite happens when an object slows down. Same formula of acceleration is used but the answer will have a negative sign with it which will show the decrease in the velocity.

Such that an object moving with the speed of 3 m/s starts to slow down. Its acceleration will become negative.

Answer 2

A quantity having value of -4 m/s² may be the may be the Retardation of the particle

Explanation:

Quantity given here is

- 4 m/s²

unit is  m/s²'    hence L / T²

first check units

Speed  of a particle has unit  L/T  

Hence not possible

Position of a particle will have unit  L

Hence not possible

Velocity of the particle​  has unit  L/T  

Hence not possible

Retardation of the particle  mean - ve acceleration

acceleration  has unit  L / T²

and  - 4 is magnitude

hence - sign means  - ve acceleration  i.e. Retardation

A quantity having value of -4 m/s² may be the may be the Retardation of the particle

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