3. A 3.50-kg mass hangs on the end of a spring and stretches the spring 12.5-cm. The
mass is then pulled down an additional 4.50-cm and let go resulting in simple
harmonic motion.
a. After it is let go, how long will it take it to reach its maximum height?
b. What is the maximum velocity of the object?

Assume similar data for the motion of the blood in your aorta. estimate how many beats of the heart it will take the blood to get from your heart to your brain. (assume that the distance from your heart to your brain is 30 cm)

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion