Well the formula is given by s=d/t and we have s=10m/s and t=30s. We get d from the equation as d=s*t= 10*30=300m.
For the second part i'm exactly not clear if you're asking for the work done or asking for its solution lol but anyway i'll just give the formula for work. It's given by w=f*d where f is the force applied. Since we don't have a value for force here, i'm just leaving it blank but u have the value of d.
