a turtle is traveling at .4/ms the it increases it speed to .6/ms over the cource of 30 seconds. what is the turtles acceleration

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.