Amyopic (nearsighted) person has a far point distance of 150 cm. what is the refractive power of his ideally prescribed eyeglasses if he wears his eyeglasses a distance of 3.0 cm from his eyes?

Physics pl 12)a body goes from p to q with a velocity of 10 m/s and comes back from q to p with a velocity of 20 m/s. what is the average velocity of the body during the entire trip? a)0 m/s b)13 m/s c)10 m/s d)15 m/s