The final velocity will be 19 m/sec.Option C is correct.
The change of displacement with respect to time is defined as the velocity.
Velocity is a vector quantity. it is a time-based component. Velocity at any angle is resolved to get its component of x and y-direction.
From Newton's first equation of motion;
[tex]\rm v = u+at \\\\ v= 4+ 0.5 \times 30 \\\\ v= 19 \ m/sec[/tex]
The final velocity will be 19 m/sec
Hence, option C is correct.
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