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Physics-

General

Easy

Question

Velocity-time $left parenthesis v$ - $t right parenthesis$ graph for a moving object is shown in the figure. Total displacement of the object during the same interval when there is non-zero acceleration and retardation is

$60 m$
$50 m$
$30 m$
$40 m$

The correct answer is: $50 blank m$

Between time interval $20 blank s e c$ to $40 blank s e c$ , there is non-zero acceleration and retardation. Hence distance travelled during this interval
$equals$ Area between time interval $20 blank s e c$ to $40 blank s e c$
$equals fraction numerator 1 over denominator 2 end fraction cross times 20 cross times 3 plus 20 cross times 1 equals 30 plus 20 equals 50 blank m$

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