Problems for Week 1

Problem 2-19 from page 54 in Young and Freedman

An antelope moving with constant acceleration covers the distance between two points 80m apart in 6.00s. Its speed as it passes the second point is 15.0 m/s.

(a)

What is its speed at the first point?

(b)

What is the acceleration?

Problem 3-5 from page 77 in Young and Freedman

The coordinates of a bird flying in the xy-plane are given as functions of time by and , where and .

(a)

Calculate the velocity and acceleration vectors of the bird as functions of time.

(b)

Calculate the magnitude and direction of the bird's velocty and accleration at t=3.0s.