Question

The displacement $x$ of a particle along a straight line at time $t$ is given by $x = a _ { 0 } + a _ { 1 } t + a _ { 2 } t ^ { 2 }$ . The acceleration of the particle is

• A. $a _ { 0 }$
• B. $a _ { 1 }$
• C. $2 a _ { 2 }$
• D. $a _ { 2 }$

Answer 1

Answer: (C)

$2 a _ { 2 }$

Answer 2

Acceleration $= \frac { d ^ { 2 } x } { d t ^ { 2 } } = 2 a _ { 2 }$