A person in a hot air balloon is flying upwards with its position being given by: H = 0.5t^3 meters. At t= 4 seconds, the person releases a ball. If you take gravity to be -9.8 bj m/s2 • What is the initial velocity of the ball?
• Based on the description, compute the time it takes for the ball to reach the ground.
• What is the the initial height where the balloon was when the person released the ball?

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

What are the three ways that an object can accelerate

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will