Q15 / 46 · NTA Abhyas (JEE Main) 2020 · Physics · Motion In One Dimension

A rocket is fired upwards. Its engine explodes fully in $12 s$ . The height reached by the rocket as calculated from its velocity-time graph is

Correct answer
A
$79200 m$
B
$158400 m$
C
$18400 m$
D
$15400 m$

Solution

The height reached by rocket is equal to the area under the velocity-time graph

$h = \frac{1}{2} \times 132 \times 1200$

$h = 79200 m$

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

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