Question

The $ v-t $ graph of a moving object is given in figure. The maximum acceleration is

• A. $1 \,cm / s ^{2}$
• B. $2\, cm / s ^{2}$
• C. $3\, cm / s ^{2}$
• D. $6\, cm / s ^{2}$

Answer 1

Answer: (D)

Slope of $v-t$ graph represents acceleration.
Sir of $v-t$ graph is maximum during time interval $30\, s$ to $40\, s$.
$\therefore $ Maximum acceleration
$=\frac{80-20}{40-30}=\frac{60}{10} $
$=6 \,cm / s ^{2}$