एक रॉकेट को लॉन्च करते समय द्रव्यमान का रॉकेट `2xx 10^(2) kg`, का बल `5 xx 10^(5)` ।

{5/7 xx (1/2)} + { 5/7 xx (-5/10)}

While leunching a rocket a rocket of mass 2xx 10^(2) kg , a force of 5 xx 10^(5) . N is applied for 10 seconds . What is the velocity attained by the rocket at the end of 10 s ?