1. Physics 218: Mechanics Instructor: Dr. Tatiana Erukhimova Lecture 5

2. An object’s velocity is measured to be where  =4.00 m/s and  =2.00 m/s 3. At t=0 the object is at x=0. Calculate the object’s position and acceleration as functions of time.

3. A ball is dropped vertically down (no air resistance) from height H. Find the position x(t) and velocity v(t) of the ball as a function of time. How long is the ball in the air?

4. A person throws a ball upward into the air with an initial velocity of 15 m/s. Calculate a)How much time does it take for the ball to reach the maximum height? b)How high does it go? c)How long is the ball in the air before it comes back to the thrower’s hands d)The velocity of the ball when it returns to the thrower’s hand e)At what time t the ball passes a point 8.00 m above the person’s hand

5. Have a great day! Reading: Chapter 3