Question

U=20m/sec
A=0.5/sec
T=30second
S=ut+1/2atsquare

Answer 1

Hey mate,

v=u+at.

v=20+(0.5×30)

v=20×(15)

v=300

Hope it will help you

Answer 2

U=20m/sec

A=0.5/sec

T=30 second  

S=ut+1/2at^2

s= 20 x 0.5 + 1/2 x 0.5 x (30)^2

s= 10 + 225

= 235 m