Acceleration of the dragster $\"\"$ .

\

We know that $\"\"$ i.e $\"\"$ .

\

On substitution

\

$\"\"$

\

$\"\"$ .

\

After 5 seconds the velocity of the dragster is

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Velocity after 5 seconds is $\"\"$ .