Question

a body of mass 5kg is moving with a uniform velocity of 10m/s. It is acted upon by a force of 20 N. What will be it's velocity after 1s? ​

Answer 1

we knew that,

F=ma

20=5*a

4m/s^2= a

we also know that,

(v-u)/t =a

(v-10)/1=4

$( v - 10) \div 1 = 4 \\ v = 4 + 10 \\ v = 14m \: per \: sec$