The following figure gives the movement of an object. Select the correct statement from the given choices.

• Correct answer
  A

  The total distance travelled by the object is $\mathrm{975 }\mathrm{m}$
• B

  The maximum acceleration of the object is $2 \mathrm{m} {\mathrm{s}}^{-2}$
• C

  The maximum deceleration happened between ${25}^{\mathrm{th}}$ and ${35}^{\mathrm{th}}$ seconds
• D

  The object was at rest between ${10}^{\mathrm{th}}$ and ${15}^{\mathrm{th}}$ seconds

Solution

The total distance travelled by the object will be area of given graph in the figure.

Total distance $s=75+225+125+100+400+50$

$=975 \mathrm{m}$

Hence, the correct answer is option: 'A'.