Question

The velocity of a body is given by the equation v $=$ 6 - 0.02t, where t is the time taken.
The body is undergoing:

• A. Uniform retardation of 0.02 m s${}^{-2}$
• B. Uniform acceleration of 0.02 m s${}^{-2}$
• C. Uniform retardation of -0.02 m s${}^{-2}$
• D. Uniform acceleration of -0.02 m s${}^{-2}$

Answer 1

Answer: (A), (D)

The correct options are
A Uniform retardation of 0.02 m s${}^{-2}$
D Uniform acceleration of -0.02 m s${}^{-2}$

$V=6-0.02t$
Compare with $v=u+at$
$\Rightarrow u=6m{s}^{-1};a=-0.02m{s}^{-2}$